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DEFINITION OF THE STAGES OF THE CYCLE OF THE SEMINIFEROUS EPITHELIUM IN THE RAT
In the present work, the cellular associations were defined by the stage of development of the spermatids, which themselves were characterized by their staining reaction to the “periodic acid-Schiff” technique (hereafter referred to as PAFSA).
Origin, differentiation and renewal of the four main epithelial cell types in the mouse small intestine. V. Unitarian Theory of the origin of the four epithelial cell types.
It is concluded that crypt-base columnar cells transform into cells of these four types and, therefore, behave as the stem cells of the epithelium and support the Unitarian Theory of epithelial cell formation in the small intestine.
Satellite cells as the source of nuclei in muscles of growing rats
The source of the new nuclei appearing during the growth of muscle fibers was examined in the tibialis anterior muscle of young Sherman rats (14–17 days of age) using radioautography at various…
Dynamics of epithelial cells in the corpus of the mouse stomach. I. Identification of proliferative cell types and pinpointing of the stem cell
The proliferative ability of the cells, as measured by the labeling index in radioautographs from mice sacrificed 30 min after an intravenous injection of 3H‐thymidine, is focused on.
Spermiogenesis of rat, mouse, hamster and guinea pig as revealed by the periodic acid-fuchsin sulfurous acid technique.
Origin, differentiation and renewal of the four main epithelial cell types in the mouse small intestine. I. Columnar cell.
The mucous cell population of duodenum, jejunum and ileum was investigated in the light and electron microscopes with the help of radioautography in mice sacrificed at various times after single…
Differentiation and renewal of spermatogonia in the monkey, Macacus rhesus.
Electron microscopic identification of three classes of oligodendrocytes and a preliminary study of their proliferative activity in the corpus callosum of young rats
In recent electron microscope studies of the corpus callosum in 60–80 gm male rats, some of the cells were identified as microglia by staining with the weak silver carbonate method of del…
Dynamics of epithelial cells in the corpus of the mouse stomach. II. Outward migration of pit cells
The pit cells (or surface mucous cells) present along pit walls and gastric surface have been investigated by electron microscopy and radioautography after a pulse or continuous infusion of…
Cellular stages in cartilage formation as revealed by morphometry, radioautography and type II collagen immunostaining of the mandibular condyle from weanling rats.
The role played by cell addition, cell enlargement, and matrix deposition in the endochondral growth of the condyle was assessed in weanling rats by four approaches making use of the light…