Abstract：
:The objective of the current study was to determine the tissue distribution of cells derived from the area opaca in heterospecific quail-chick blastodermal chimeras. Quail-chick chimeras were constructed by transferring dissociated cells from the area opaca of the stage X-XII (EG&K) quail embryo into the subgerminal cavity of the unincubated chick blastoderm. The distribution of quail cells in embryonic as well as extra-embryonic tissues of the recipient embryo were examined using the QCPN monoclonal antibody after 6 days of incubation in serial sections taken at 100-mum intervals. Data gathered in the present study demonstrated that, when introduced into the subgerminal cavity of a recipient embryo, cells of the area opaca are able to populate not only extra-embryonic structures such as the amnion and the yolk sac, but also various embryonic tissues derived from the ectoderm and less frequently the mesoderm. Ectodermal chimerism was confined mainly to the head region and was observed in tissues derived from the neural ectoderm and the surface ectoderm, including the optic cup, diencephalon and lens. Although the possibility of random incorporation of transplanted cells into these embryonic structures cannot be excluded, these results would suggest that area opaca, a peripheral ring of cells in the avian embryo destined to form the extra-embryonic ectoderm and endoderm of the yolk sac, might harbor cells that have the potential to give rise to various cell types in the recipient chick embryo, including those derived from the surface ectoderm and neural ectoderm.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Karagenç L,Sandikci Mdoi
10.1111/j.1469-7580.2009.01168.xsubject
Has Abstractpub_date
2010-01-01 00:00:00pages
16-22issue
1eissn
0021-8782issn
1469-7580pii
JOA1168journal_volume
216pub_type
杂志文章abstract：:The aim of the study was to examine by means of stereology the effects of pinealectomy and melatonin on the structure of the adrenal cortex of ovariectomised rats and to check whether the effect of oestradiol on the rat adrenal cortex is modified by the pineal gland. Neither pinealectomy (73 days) nor melatonin treatm...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1985-08-01 00:00:00
abstract：:Myocardial hyperplasia is generally considered to occur only during fetal development. However, recent evidence suggests that this type of response may also be triggered by cardiac overload after birth. In congenital heart disease, loading conditions are frequently abnormal, thereby affecting ventricular function. We ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2008.00853.x
更新日期：2008-03-01 00:00:00
abstract：:The ontogeny of the nasolacrimal ducts (NLD) and canals (NLC) are investigated in strepsirrhine and haplorhine primates. Developmental series of serially sectioned fetal, perinatal and adult specimens, in combination with juvenile and adult skulls subjected to high-resolution computed tomography, reveal that the verti...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2006.00682.x
更新日期：2007-02-01 00:00:00
abstract：:The study of the underlying mechanisms by which cells respond to mechanical stimuli, i.e. the link between the mechanical stimulus and gene expression, represents a new and important area in the morphological sciences. Several cell types ('mechanocytes'), e.g. osteoblasts and fibroblasts as well as smooth, cardiac and...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1046/j.1469-7580.1999.19430323.x
更新日期：1999-04-01 00:00:00
abstract：:The translocation of mitochondria towards the primitive inner segment of the cones in the tree shrew Tupaia belangeri was investigated by transmission electron microscopy. Throughout ontogeny the migrating mitochondria were codistributed with cytoplasmic microtubules which were preserved after the application of conve...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1996-10-01 00:00:00
abstract：:A defining feature of dentitions in modern sharks and rays is the regulated pattern order that generates multiple replacement teeth. These are arranged in labio-lingual files of replacement teeth that form in sequential time order both along the jaw and within successively initiated teeth in a deep dental lamina. Two ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12796
更新日期：2018-06-01 00:00:00
abstract：:The morphology of the epididymal duct and, in particular, the epididymal microvasculature was examined at the light microscope level in young sexually-mature rats (3-5 months) and aged rats (18 months) to investigate the structural changes that may occur within the organ as a result of ageing, and which may predispose...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1992-04-01 00:00:00
abstract：:Taurodontism (i.e. enlarged pulp chamber with concomitant apical displacement of the root bi/trifurcation) is considered a dental anomaly with relatively low incidence in contemporary societies, but it represents a typical trait frequently found in Neandertal teeth. Four hypotheses can be envisioned to explain the hig...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12260
更新日期：2015-02-01 00:00:00
abstract：:Germline stem cells, which can self-renew and generate gametes, are unique stem cells in that they are solely dedicated to transmit genetic information from generation to generation. The germ cells have a special place in the life cycle because they must be able to retain the ability to recreate the organism, a proper...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/j.1469-7580.2008.00930.x
更新日期：2008-07-01 00:00:00
abstract：:A quantitative and morphological study was made of the corpus callosum in children to assess possible sex differences. The shape of the splenium of the corpus callosum was observed to vary between bulbous and cylindrical types with respect to the body of the callosum. The variation was not gender-specific and covariat...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1985-12-01 00:00:00
abstract：:In a study of 80 cavernous sinuses in 40 cadavers, the trochlear nerve entered the cavernous sinus in 87.5% of cases before the crossing, in 7.5% at the crossing and in 5.0% after the crossing of the free and the attached margins of the tentorium cerebelli. In 77.5% of specimens the trochlear nerve showed a marked ben...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1988-08-01 00:00:00
abstract：:The fine structure of the elastic cartilage of the pinna has been examined in young rabbits aged from 1 day to 1108 days. Changes associated with growth and development are related not only to age but also to the actual situation in the pinna. In the midline, progressive changes are seen from the tip to the base. The ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1977-04-01 00:00:00
abstract：:One of the most prominent features of the cranial component of the temporomandibular joint (TMJ) is the articular eminence (AE). This bar of bone is the primary surface upon which the condyle translates and rotates during movements of the mandible, and is therefore the primary point at which forces are transmitted fro...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2011.01424.x
更新日期：2011-11-01 00:00:00
abstract：:Human beings have considerably expanded cognitive abilities compared with all other species and they also have a relatively larger cerebral cortex compared with their body size. But is a bigger brain the only reason for higher cognition or have other features evolved in parallel? Humans have more and different types o...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/joa.12198
更新日期：2015-10-01 00:00:00
abstract：:A new type of magnetic resonance imaging analysis, based on fusion of three-dimensional reconstructions of time-to-peak parametric maps and high-resolution T1-weighted images, is proposed in order to evaluate the perfusion of selected volumes of interest. Because in recent years a wealth of data have suggested the cru...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2006.00659.x
更新日期：2007-01-01 00:00:00
abstract：:Human mesenchymal stem cells (hMSC) are a heterogeneous cell population, which is reflected in varying morphological and biological properties. Three subpopulations with intrinsic characteristics can be distinguished: small rapidly self-renewing cells, spindle-shaped cells and large, flattened cells. Unfortunately, it...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2009.01065.x
更新日期：2009-05-01 00:00:00
abstract：:Pancreatic duct glands (PDGs) are tubule-alveolar glands associated with the pancreatic duct system and can be considered the anatomical counterpart of peribiliary glands (PBGs) found within the biliary tree. Recently, we demonstrated that endodermal precursor niches exist fetally and postnatally and are composed func...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12418
更新日期：2016-03-01 00:00:00
abstract：:Assessment of global endocranial morphology and regional neuroanatomical changes in early hominins is critical for the reconstruction of evolutionary trajectories of cerebral regions in the human lineage. Early evidence of cortical reorganization in specific local areas (e.g. visual cortex, inferior frontal gyrus) is ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12745
更新日期：2018-02-01 00:00:00
abstract：:The vomeronasal system (VNS) has been extensively studied within specific animal families, such as Rodentia. However, the study of the VNS in other families, such as Canidae, has long been neglected. Among canids, the vomeronasal organ (VNO) has only been studied in detail in the dog, and no studies have examined the ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13254
更新日期：2020-11-01 00:00:00
abstract：:Amniotic fluid-derived stem cells (AFSCs) are a unique stem cell source that may have great potential for use in tissue engineering (TE) due to their pluripotentiality. AFSCs have previously shown angiogenic potential and may present an alternative cell source for endothelial-like cells that could be used in range of ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12283
更新日期：2015-12-01 00:00:00
abstract：:The differentiation of the bulbar region and arterial outflow tract of the developing mouse heart was investigated by analysing serial transverse sections through the heart region of mouse embryos isolated between the eleventh and fifteenth day of gestation. Over this period of time, we observed the configurational an...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1988-06-01 00:00:00
abstract：:A symposium on extramedullary haematopoiesis was held on 11-12 September 1996 at the University of St Andrews. The following are abstracts of papers and posters presented at the meeting. ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1997.19020311.x
更新日期：1997-02-01 00:00:00
abstract：:Although several studies have been published regarding the morphology and anatomical variations of the human shoulder joint, most have dealt with adult individuals. Those looking into the development of the joint have been focused on specific structures or have observed specimens in advanced gestational stages. The go...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12753
更新日期：2018-03-01 00:00:00
abstract：:The occurrence of pneumatisation in the skull of the adult domestic fowl was investigated in eight birds by gross and histological examination. It was found to occur regularly throughout the neurocranium and in the quadrate and variably in the mandible, but to be absent in the facial skeleton. Close agreement was foun...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1984-06-01 00:00:00
abstract：:The inner thoracic cavity is lined by the parietal pleura, and the lung lobes are covered by the visceral pleura. The parietal and visceral plurae form the pleural cavity that has negative pressure within to enable normal respiration. The lung tissues are bilaterally innervated by vagal and spinal nerves, including se...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12560
更新日期：2017-02-01 00:00:00
abstract：:There is an accumulating body of evidence that highlights the fact that one can identify convergence in programmes of cellular differentiation. That is, that a particular differentiated cell/tissue type can be generated via non-identical paths. Convergence is also seen in evolution and here it is termed homoplasy, thu...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/j.1469-7580.2010.01232.x
更新日期：2010-06-01 00:00:00
abstract：:Tongues were removed from rat fetuses on d 16 of gestation (E16) and from newborn (P0) and juvenile rats on d 7 (P7) and d 21 (P21) postnatally for examination by light and transmission electron microscopy. In the fetuses at E16, no rudiments of filiform papillae were visible on the dorsal surface of the tongue. No ev...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1999.19510027.x
更新日期：1999-07-01 00:00:00
abstract：:The zebrafish is as an important vertebrate animal model system for studying developmental processes, gene functions and signalling pathways. It is also used as a model system for the understanding of human developmental diseases including those related to the skeleton. However, surprisingly little is known about norm...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12480
更新日期：2016-07-01 00:00:00
abstract：:Excisional wounds were inflicted on the palatal mucoperiosteum of beagle pups at intervals from 3 to 31 days before the animals were killed, when the animals were perfused and the tissue examined by electron, microscopy. Fibroblasts with the morphological characteristics of myofibroblasts, including bundles of intrace...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1980-05-01 00:00:00
abstract：:The developing cortical surfaces of long bones are sculpted and modeled by periosteal osteoclasts and osteoblasts. These surfaces also receive the insertions of tendons and ligaments, and these insertion sites too are modeled to form the root systems that anchor them into the cortical bone. The regulatory molecules th...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12145
更新日期：2014-04-01 00:00:00
