Abstract:
:Lungfish are a group of ancient fish, represented almost continuously in the fossil record from their first appearance in the Devonian to the present time. They have numerous unique characters in the dentition, found only among lungfish, as well as some that are shared with other groups of fish and with higher vertebrates, such as a thin layer of true enamel, instead of the enameloid found in the dentition of most fish. Unique characters include the diversity of forms of dentine in the tooth plates, as well as the organisation of the dentines and the unusual mode of continuous growth of the dentition. Their enamel is based on amelogenin formed by the ameloblasts of the dental lamina, and is mineralised by long crystals of calcium hydroxyapatite deposited in layers over the developing tooth. The different forms of dentine, which show progressive evolutionary change within the group, are based on an extracellular matrix of collagen, mineralised with calcium hydroxapatite of variable crystalline form. Cells that line the oral cavity produce the ameloblasts that are endodermal in origin, and cells that form the dental papillae are, like the other cells that secrete skeletal tissues, derived from head mesoderm, as in other vertebrates. Unique to all dipnoans is the fusion of the dental tissues to the underlying bone and the way in which bone, included within the tooth plate, remodels to permit growth in the whole dentition.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Kemp Adoi
10.1002/jemt.10221keywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
435-48issue
5eissn
1059-910Xissn
1097-0029journal_volume
59pub_type
杂志文章abstract::We report an ingenious method of super-resolution optical microscopy utilizing scannable cantilever-combined microsphere. By scanning the microsphere over the sample surface in a cantilever-combined microsphere-sample contact state, super-resolution images can be acquired at arbitrary sample regions through near-field...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22595
更新日期:2015-12-01 00:00:00
abstract::In this article, the Ni-Cu nanoparticles (NPs) in the amorphous carbon hydrogenated thin films with different copper percentage by co-deposition of RF-plasma enhanced chemical vapor deposition were prepared using acetylene gas and Ni and Cu targets. The films deposited with 5% Cu have minimum value of the average diam...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23679
更新日期:2020-12-22 00:00:00
abstract::Combined microscopy techniques are used to establish the usability of phosphonic acid layers as promoters of hydroxyapatite (HAp) growth. Using spread coating, octadecylphosphonic acid (OPA) self-assembled bilayers are delivered to the thin natural oxide layer of a titanium film surface with no prior treatment. These ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22297
更新日期:2013-12-01 00:00:00
abstract::There is increasing evidence for the important role played by regulatory peptides in the physiology of the normal and neoplastic prostate. Adrenomedullin (AM) and pro-adrenomedullin N-terminal 20 peptide (PAMP) are recently discovered regulatory peptides widely expressed in the normal prostate and in prostate carcinom...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.10056
更新日期:2002-04-15 00:00:00
abstract::Neurons begin to polarize when one of the neurites becomes the axon. Hippocampal neurons in cell culture have a sharp transition between their unpolarized and polarized stage revealed by the rapid growth of the future axon. Recent progress shows that both a cytoplasmic membrane flow and actin dynamics govern axon form...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(20000101)48:1<3::AID-JEMT2
更新日期:2000-01-01 00:00:00
abstract::The principal functions of the gastrointestinal tract mucosa include nutrient absorption, protein and fluid secretion, and the regulated symbiosis with intraluminal contents. Research in epithelial biology has benefited significantly from the use of cultured monolayer preparations, which closely replicate the structur...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20001015)51:2<204::AID-JEMT11>3.
更新日期:2000-10-15 00:00:00
abstract::Morphological parameters and renal flow were assessed and measured in six clinically healthy dogs with negative serological and parasitological examinations for canine visceral leishmaniasis (CVL) and six dogs with CVL-positive serological and parasitological tests and asymptomatic condition of the disease. Kidney len...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22677
更新日期:2016-07-01 00:00:00
abstract::The present study was conducted on characterization of morpho-anatomical, phytochemical, and bio-elemental analysis of root, stem, and leaf of Verbascum thapsus. Morphologically Verbascum is a biennial plant that flowers for a month and a half in mid- to late summer. Various organoleptic features of root, leaf, and st...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23454
更新日期:2020-06-01 00:00:00
abstract::In vivo and in vitro multiphoton imaging was used to perform high resolution optical sectioning of human hair by nonlinear excitation of endogenous as well as exogenous fluorophores. Multiphoton fluorescence lifetime imaging (FLIM) based on time-resolved single photon counting and near-infrared femtosecond laser pulse...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20395
更新日期:2007-02-01 00:00:00
abstract::During the emergence of multicellular organisms, molecular mechanisms evolved to allow maintenance of anatomical integrity and self-recognition. We propose that carbohydrates from proteoglycans, as the most peripheral cell surface, and matrix molecules might have provided these key adhesion and recognition functions. ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19990215)44:4<304::AID-JEM
更新日期:1999-02-15 00:00:00
abstract::Filamentous bacteriophage has been proposed as a vehicle that can carry and deliver therapeutics into mammalian cells for disease treatment, thus a protocol for imaging phage-cell interaction is essential. Because high signal intensity is necessary to study the mechanism of interaction between filamentous bacteriophag...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20793
更新日期:2010-05-01 00:00:00
abstract::Low voltage electron microscopes working in transmission mode, like LVEM5 (Delong Instruments, Czech Republic) working at accelerating voltage 5 kV or scanning electron microscope working in transmission mode with accelerating voltage below 1 kV, require ultrathin sections with the thickness below 20 nm. Decreasing of...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22659
更新日期:2016-06-01 00:00:00
abstract::Malaria is a serious worldwide disease, caused by a bite of a female Anopheles mosquito. The parasite transferred into complex life round in which it is grown and reproduces into the human body. The detection and recognition of Plasmodium species are possible and efficient through a process called staining (Giemsa). T...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23269
更新日期:2019-07-01 00:00:00
abstract::This paper presents a snapshot view of the influence and direction of microcomputer technology for image analysis techniques in diagnostic pathology. Microcomputers have had considerable impact in bringing image analysis to wider application. Semi-automated tracing techniques are a simple means of providing objective ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.1070210406
更新日期:1992-06-01 00:00:00
abstract::The study focused on the description of pig gallbladder angioarchitecture, with particular emphasis on the specifics of the course of blood vessels in individual layers of the gallbladder wall. Furthermore, the vascular systems of the pig gallbladder were analyzed in terms of the adaptation of this organ to changes in...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22388
更新日期:2014-09-01 00:00:00
abstract::High speed data registration is required for the study of fluorescence resonance energy transfer in real time as well as fast dynamic intra- and inter-cellular signaling events. Multispectral confocal spinning disk microscopy provides a high resolution method for performing such real time live cell imaging. However, o...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20423
更新日期:2007-04-01 00:00:00
abstract::The carotid body (CB) is a highly specialized small organ located at the bifurcation of the common carotid artery in the neck and plays an important role in acute adaptation to hypoxia. The most common diseased state of the carotid body is its enlargement (i.e., the CB paraganglioma), which can be caused by a genetic ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.10200
更新日期:2002-11-01 00:00:00
abstract::This review article focuses on the ontogeny and the regulatory mechanisms involved in the modulation of the intracellular events governing the assembly and delivery of lipoproteins in human gut. The human fetal intestine organizes villi covered with well-differentiated enterocytes during the end of the first trimester...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(20000515)49:4<363::AID-JEM
更新日期:2000-05-15 00:00:00
abstract::Ultramicrotomy has found novel application in materials research using transmission electron microscopy, for both analytical and high resolution work. Specimens 20-50 nm in thickness with lateral dimensions of up to 100 microns may routinely be prepared, with the additional advantage of precise area location for cross...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.1070310404
更新日期:1995-07-01 00:00:00
abstract::Among the five senses, the sense of smell (olfaction) is the most sensitive and emotional window on the outside world (Stern and Marx, 1999). The olfactory system recognizes and discriminates myriad odorants of diverse molecular structures. What makes the olfactory system so specific and sensitive? OE harboring the ol...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.10130
更新日期:2002-08-01 00:00:00
abstract::The small GTPase Rho, which regulates cell shape, is thought to contribute to cytokinesis. Recently, Citron was characterized as a Rho target. This large protein contains a Ser/Thr kinase domain related to that of ROCK, another Rho effector. Both endogenous Citron and recombinant Citron localize to the cleavage furrow...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(20000415)49:2<123::AID-JEM
更新日期:2000-04-15 00:00:00
abstract::The avian pancreas has three or four lobes and develops from a dorsal and two ventral buds. The cells that will contribute to formation of the dorsal bud are at first located in the mid-dorsal endoderm, those of the ventral buds in the floor of the foregut. The determination of endoderm to form dorsal and ventral bud ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19981115)43:4<292::AID-JEM
更新日期:1998-11-15 00:00:00
abstract::The morphological development of the vomeronasal organ (VNO) and accessory olfactory bulb (AOB) of the sheep from anlage to birth were studied by classical and histochemical methods using embryos and fetuses obtained from an abattoir with ages estimated from crown-to-rump length. Both VNO and AOB developed in a biolog...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.10362
更新日期:2003-08-01 00:00:00
abstract::In the present work, we propose the use of the Laser Scanning Confocal Microscopy (LSCM) to determine the effect of water repellents on rock's pore-network configuration and interconnection. The rocks studied are sandstones of Miocene age, a building material that is commonly found in the architectural heritage of Tun...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20624
更新日期:2008-11-01 00:00:00
abstract::GABA is a likely feedback transmitter from H1 horizontal cells to cone photoreceptors in fish retinas. Spinules arise from H1 cell dendrites in light-adapted retinas, are correlated with responses attributed to feedback, and have been proposed to be the GABA release sites. We used mAb 62-3G1, an antibody against the b...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0029(19970101)36:1<43::AID-JEMT
更新日期:1997-01-01 00:00:00
abstract::The aim of this report was to investigate the ultrastructure and three-dimensional organization of the pleural lymphatic stomata in the adult rabbit costal pleura by electron microscopy. A computer image processing system attached to the scanning electron microscopy was used to get statistical evaluation of the dimens...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.10388
更新日期:2003-10-15 00:00:00
abstract::In the current investigation, 16 samples of six species of the genus Polygonatum were collected from different geographical regions in China. Leaf micromorphological traits were studied in detail using scanning electron microscopy. About five-leaf samples were used for each species collected from different geographica...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23529
更新日期:2020-11-01 00:00:00
abstract::Macro and micromorphology of different parts that is, sepals, petals, flowers, indumentum, and leaf shape of 22 Geranium L. taxa from Iran were studied. These taxa representing the eight sections of the genus as sect. Dissecta, sect. Geranium, and sect. Tuberosa (of subgen. Geranium); sect. Batrachioidea, sect. Divari...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23159
更新日期:2018-12-01 00:00:00
abstract::Research into the POU transcription factor Oct-6 has been the focus of much current attention, in particular its role in Schwann cell development and differentiation. Based on published data and data presented here, we propose a model for Oct-6 function at two distinct stages of Schwann cell maturation. First, Oct-6 f...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0029(19980601)41:5<372::AID-JEM
更新日期:1998-06-01 00:00:00
abstract::Automated detection and classification of gastric infections (i.e., ulcer, polyp, esophagitis, and bleeding) through wireless capsule endoscopy (WCE) is still a key challenge. Doctors can identify these endoscopic diseases by using the computer-aided diagnostic (CAD) systems. In this article, a new fully automated sys...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23447
更新日期:2020-05-01 00:00:00