Abstract：
:The cumulus and membrana granulosa of non-atretic ovarian follicles from primordial up to a stage shortly before ovulation were studied by electron microscopy. The follicular cells of primordial follicles were undifferentiated and rested on a thick basal lamina. In secondary follicles the endoplasmic reticulum had proliferated forming an anastomosing network. In early antral and antral follicles (0.5--2.0 mm dia.) the ER was composed of short cisternae, the mitochondria had elongated and gap junctions were first observed. In late antral follicles (3.0--5.9 mm dia.) gap junctions were frequent. In the cumulus the glycogen was associated with electron lucent areas whereas in the granulosa it was invariably associated with membranes. In large antral follicles large membrane bound bodies were present in the basal cells of the cumulus. At early oestrus a distinctive mitochondrial morphology was noted in the granulosa but not elsewhere in the follicles. At mid oestrus numerous annular nexuses were present in the granulosa but not in the cumulus. At late oestrus numerous lipid droplets were formed in both cumulus and granulosa, the boundary with theca interna became indistinct and the basal lamina became incomplete.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Cran DG,Hay MF,Moor RMdoi
10.1007/BF00220436subject
Has Abstractpub_date
1979-11-01 00:00:00pages
439-51issue
3eissn
0302-766Xissn
1432-0878journal_volume
202pub_type
杂志文章abstract：:To identify and describe ovarian follicles committed to undergo follicular degeneration (atresia), immature rats were primed with pregnant mare serum gonadotropin (PMSG). After PMSG treatment, preovulatory follicles develop but subsequently degenerate. Prior to the appearance of pyknotic nuclei (Stage I of atresia), d...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233727
更新日期：1980-01-01 00:00:00
abstract：:The motility patterns of the reticulorumen evoke mainly mixing of the ingesta. So far unknown, intrinsic neural circuits of the enteric nervous system are involved in the control of these motility patterns. The aim of the study was to characterize neurochemically sheep ruminal myenteric neurones, in particular the neu...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0554-7
更新日期：2002-09-01 00:00:00
abstract：:The medial preoptic nucleus of the Japanese quail is a testosterone-sensitive structure that is involved in the control of male copulatory behavior. The full understanding of the role played by this nucleus in the control of reproduction requires the identification of its afferent and efferent connections. In order to...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00343944
更新日期：1994-06-01 00:00:00
abstract：:A reversible breakdown of the blood-aqueous barrier in the iridial processes of rabbits has been induced by arachidonic acid as demonstrated by the passage of horseradish peroxidase at places through the tight junctions. Freeze-fracture images reveal very discontinuous P-face ridges. However, the analysis of complemen...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00213948
更新日期：1986-01-01 00:00:00
abstract：:Prostatic carcinoma affects 1 in 11 men and targets bone with sclerotic metastases. The study of prostate carcinoma growth in bone has been hampered by the lack of suitable animal models. We have developed an in vivo model of prostate carcinoma growth in bone by inoculating three human prostate carcinoma cell lines (P...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-001-0503-x
更新日期：2002-03-01 00:00:00
abstract：:The H-Tx rat has fetal-onset hydrocephalus associated with closure of the cerebral aqueduct and a reduction in the secretory cells of the subcommissural organ (SCO), a circumventricular organ situated in the dorsal wall of the cerebral aqueduct. The objective of this study was to determine the role of the SCO in hydro...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0843-9
更新日期：2004-03-01 00:00:00
abstract：:Uptake of uteroglobin (UGL) by day-6 rabbit blastocysts and the intracellular fate of this protein were studied by light- and electron-microscopic autoradiography, immunocytochemistry and acid-phosphatase cytochemistry. UGL, labelled with N-succinimidyl-(2-3-3H)-propionate, was administered to embryos in vitro for 25 ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00305254
更新日期：1990-12-01 00:00:00
abstract：:Inside the light organs of the bioluminescent (light-producing) crustacean Meganyctiphanes norvegica (krill), numerous capillaries drain haemolymph into the light-producing structure (lantern). We have investigated the arrangement and function of filamentous material found around the opening of the capillaries. These ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-009-0774-1
更新日期：2009-05-01 00:00:00
abstract：:Long-term in vitro culture (16 days) of caprine ovarian cortical tissue was performed to test the effect of FSH and IGF-I on the viability and development of preantral follicles and mRNA expression for FSH and IGF-I receptors. Fragments were cultured in α-MEM(+) alone or supplemented with different combinations of FSH...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1498-1
更新日期：2012-12-01 00:00:00
abstract：:Previous investigations have demonstrated that peripheral insulin has a significant influence on brain function and that the interaction of insulin with neuropeptides in neuroendocrine regions may be pivotal for the regulation of body metabolism and energy balance. Since the various levels of interactions are only inc...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050833
更新日期：1997-06-01 00:00:00
abstract：:Wnts are secreted glycoproteins that play multiple roles in early development, including the differentiation of precursor cells. During this period, gradients of Wnts and other morphogens are formed and regulate the differentiation and migration of neural progenitor cells. Afterwards, Wnt signalling cascades participa...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-014-1996-4
更新日期：2015-01-01 00:00:00
abstract：:The passage of cells across the lymphatic endothelium of rat lacteals in both normal and non-pathological experimental conditions (fasting, lymphatic, stasis) was studied by means of serial thin sections and three-dimensional models. Two different pathways of transendothelial migration were observed: (1) macrophages e...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00327761
更新日期：1990-10-01 00:00:00
abstract：:The membrane systems of cardiac muscle cells of the euphausiacean Meganychtiphanes norvegica are described. Transverse tubules are found both at the Z-band level (TZ-tubules) and at the H-band level (Th-tubules). Within the sarcomere narrow longitudinal tubules branch off from the TZ-tubules. At the H-band level these...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223109
更新日期：1977-07-15 00:00:00
abstract：:The protonephridial flame cell of the freshwater planarian Bdellocephala brunnea was studied by electron microscopy. This basketlike cell with luminal cilia and fenestrae is known as a cyrtocyte. Careful examination revealed the actual continuity of the fenestrae over the surface of the cell and the microvillous natur...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00237973
更新日期：1980-01-01 00:00:00
abstract：:In adrenalectomized rats the influence of salt loading or salt deprivation on the vasopressin and oxytocin content of the median eminence (ME) and the neural lobe (NL) was studied by means of various methods: morphometric and microphotometric analysis of aldehyde fuchsin-stained sections of ME and NL; immunohistochemi...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/BF00215904
更新日期：1986-01-01 00:00:00
abstract：:Two types of mammosomatotropes (MS), the small-granule and vesicle-granule MS, were detected in mouse adenohypophysis by electron microscopy and immunohistochemistry. Both cell-types were immunoreactive to prolactin (PRL) and growth hormone (GH) antisera. The small-granule MS contained small, round, solid secretory gr...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225615
更新日期：1989-06-01 00:00:00
abstract：:The luminal surface features and junctional complexes from developing blood vessels in the rat central nervous system have been studied by high-voltage electron microscopy and scanning electron microscopy. Developing blood vessels exhibit three types of luminal projections; marginal folds or ridges at junctional compl...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222417
更新日期：1977-01-04 00:00:00
abstract：:The fine structure, nature and fate of the components of the nucleolus were studied in young (steps 1, 2), intermediate (steps 3, 4, 5) and mature spermatids (steps 6, 7, 8) of man and monkey, by use of several cytochemical techniques (alcoholic PTA; sodium tungstate: EDTA; HAPTA; nuclease-gold complexes; NOR silver s...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00305735
更新日期：1991-04-01 00:00:00
abstract：:Placenta-derived stem cells (PDSCs) have gained interest as an alternative source of stem cells for regenerative medicine because of their potential for self-renewal and differentiation and their immunomodulatory properties. Although many studies have characterized various PDSCs biologically, the properties of the sel...
journal_title：Cell and tissue research
pub_type： 临床试验,杂志文章
doi：10.1007/s00441-011-1249-8
更新日期：2011-10-01 00:00:00
abstract：:Striated rootlets in ciliated cells are conical banded structures composed of longitudinally aligned filaments. The formation of striated rootlets during ciliognesis in the human oviduct epithelium was studied by electron microscopy. Primitive rootlets appeared at the proximal side of basal bodies before or at the sam...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050905
更新日期：1997-10-01 00:00:00
abstract：:Although several studies have shown a dysregulation of microRNA (miRNA) expression profiles in cutaneous melanoma, there has been little research on the miRNA machinery itself. In this study, we investigated the mRNA expression profiles of different miRNA machinery components in primary cutaneous malignant melanoma (P...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1446-0
更新日期：2012-10-01 00:00:00
abstract：:It is believed that differentiation and maintenance of taste buds in vertebrates is dependent on the trophic function of their sensory nerve supply. In the present work, colchicine was injected into the circumvallate papilla of the rat. This produced a reversible blockade of neuroplasmic transport and disappearance of...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00231023
更新日期：1978-08-25 00:00:00
abstract：:Changes in intestinal function, notably impaired transit, following ischemia/reperfusion (I/R) injury are likely to derive, at least in part, from damage to the enteric nervous system. Currently, there is a lack of quantitative data and methods on which to base quantitation of changes that occur in enteric neurons. In...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-010-1126-x
更新日期：2011-04-01 00:00:00
abstract：:Some non-endocrine cells in the pituitary anterior lobe are responsible for providing stem/progenitor cells to maintain hormone-producing cells. In particular, cells expressing S100β protein, a calcium-binding protein, have been hypothesized to be a pituitary cell resource. Accumulating data have revealed that S100β-p...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-014-1890-0
更新日期：2014-09-01 00:00:00
abstract：:The three-dimensional structure of the mitochondria and sarcoplasmic reticulum (SR) in the three types of twitch fibers, i.e., the red, white and intermediate skeletal muscle fibers, of the vastus lateralis muscle of the Japanese meadow frog (Rana nigromaculata nigromaculata Hallowell) was examined by high resolution ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218939
更新日期：1987-12-01 00:00:00
abstract：:The ontogeny of protein gene product 9.5 (PGP 9.5), serotonin (5-HT), calcitonin gene-related peptide (CGRP), and calcitonin (CT) immunoreactivity was evaluated in small-granule endocrine cells of hamster laryngotracheal epithelium from fetal day 11 to adulthood. Two centrifugal (proximal-to-distal) patterns of differ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00305382
更新日期：1994-01-01 00:00:00
abstract：:Over the past decade, adult stem cells have attracted great attention because of their ability to potentially regenerate desired tissues or entire organs. With the emergence of nanomaterial-based gene therapy, adult stem cells have been considered as a proper tool for the biomedical field. In this study, we utilized o...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-015-2235-3
更新日期：2015-12-01 00:00:00
abstract：:The functional expression of vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1) and MAdCAM-1 in the choroid plexus is indicative of a role of this structure in the communication of the immune system with the central nervous system (CNS). In order to gain further insight into the pos...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051287
更新日期：1999-05-01 00:00:00
abstract：:Agitation of villi evokes reflexes that affect the motility of the guinea-pig small intestine. NK1 receptor endocytosis was used to investigate the possible involvement of tachykinins acting on neuronal NK1 receptors in these reflexes. Segments of guinea-pig ileum were incubated at 37 degrees C in Krebs physiological ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051032
更新日期：1998-04-01 00:00:00
abstract：:The ultrastructure of the contractile apparatus of the rat soleus muscle during the course of denervation atrophy was investigated. It was found that the ratio of thin the thick filaments increased in myofibrils of atrophying muscle fibers. Elevation of the ratio was observed as early as the second day after denervati...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216767
更新日期：1981-01-01 00:00:00
