The fine structure of developing type 'B' dermal glands in Rhodnius prolixus [0.03%]
Rhodnius prolixus型"B"皮肤腺发育的精细结构
J Lai-Fook
J Lai-Fook
The fine structure of the developing type 'B' dermal gland, the more common type in fifth instar larvae of Rhodnius, is described. Each gland consists of three cells responsible for secretion of the duct, saccule and secretion product or pr...
M Kalk
M Kalk
Cardiac myoepithelial cells contain three myofibrils adjacent to the lumen. Zonula adhaerentes connect myofibrillar ends; desomosomes and peg-in-socket connections occur laterally with zonulae occludenfes at the pericardial border. Conducti...
Studies on secretory activity in the pars intermedia of Xenopus laevis 3. The synthesis and release of melanocyte stimulating hormone (MSH) in vitro [0.03%]
非洲爪蟾垂体中间部促黑色素细胞激素的合成与释放体外研究
C R Hopkins
C R Hopkins
Methods of bioassay and electron microscopy have been employed in the study of secretion of MSH from single pars intermedia/nervosa lobes maintained in vitro. It is shown that in a modified Krebs-Ringer medium the tissue displays an endogen...
Studies on secretory activity in the pars intermedia of Xenopus laevis 2: A biochemical and electron cytochemical investigation of acid hydrolase activity following the stimulation of secretory activity in vivo [0.03%]
非洲爪蟾垂体中间叶促素分泌的研究(第二报).促分泌作用诱发后酸性水解酶活性的生化学和电子细胞化学的研究
C R Hopkins
C R Hopkins
In the MSH cell at the onset of secretory activity, acid hydrolase activity increases. This increased activity, shown quantitatively by assaying beta-glycerophosphatase and R-glucuronidase within the stimulated gland, has been shown by elec...
Studies on secretory activity in the pars intermedia of Xenopus laevis 1: Fine structural changes related to the onset of secretory activity in vivo [0.03%]
非洲爪蟾垂体中间叶内分泌活动的研究(I)──内分泌细胞的超微结构及其活体分泌时的变化
C R Hopkins
C R Hopkins
Changes in the fine structural organization of the pars intermedia related to the onset of secretory activity within the gland have been studied. It is shown that during the first seven days, following the onset of secretory activity, there...
Fine structure of the medullary command nucleus of the electric organ of the skate [0.03%]
电鳐电器官髓质指挥核的精细结构研究
Y Nakajima
Y Nakajima
Many axodentritic and axosomatic synapses of chemical type exist in the medullary command nucleus which controls the electric organ discharge in the skate (Raia clavata and Raia basis). The pre- and postsynaptic membranes are separated from...
B H Harrison,C I Patt,J T Albright
B H Harrison
Lymphopoiesis was studied by electron microscopy in the palatine tonsil of the rabbit from 18 days gestation to 5 days after birth. At 18 days tonsils formed as mounds of mesenchyma covered with epithelium. At 19 days the basal epithelial c...
Aspects of fine structure and function of the subcommissural organ of the embryonic chick [0.03%]
鸡胚下逗器官的亚显微结构与机能的若干方面研究
U Smith
U Smith
The fine structure of the subcommissural organ (SCO) of the embryonic chick has been studied. No evidence of secretory release was obtained. The SCO seems not to be involved in such previously suggested roles as water regulation or response...
I Berman,C C Stice
I Berman
Annulate lamellae have been observed in undifferentiated cells in the marrow of mice treated with urethan. They were not found in any recognizable hematopoietic element in either urethan- or saline-injected controls. The possibility has bee...
R B Wuerker
R B Wuerker
The structure of neurofilaments and glial filaments are compared. Both filaments are composed of three subunits-a globule, interconnecting crossbar and side-arms. These elements form a tubular arrangement and their dimensions are given. Sin...