caa a22 4500 469083700 CHVBK 20180323132958.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF00384725 doi (NATIONALLICENCE)springer-10.1007/BF00384725 Smooth muscle cells in the walls of ovarian follicles in the Japanese quail [Elektronische Daten] [Luc Van Nassauw, Marc Callebaut, Fernand Harrisson, Dietrich Scheuermann] Summary: The walls of pre-ovulatory follicles of the Japanese quail were examined at the ultrastructural level for the presence of cells displaying the typical morphological features of smooth muscle cells. These characteristics were found in the cells of the chordae, the tunica albuginea, and the theca externa. Small, elongated cells, containing microfilaments, were observed in the theca of prelampbrush follicles localized in the ovarian cortex. These thecal cells were considered as the putative precursors of the thecal smooth muscle cells of the pre-ovulatory follicle. The difference between the smooth muscle cells of the pre-ovulatory follicle and those in the wall of the most recent post-ovulatory follicle is the contracted state of the latter, which is most evident in the cells of the theca externa. It can be concluded that the cells of the theca externa are smooth muscle cells which are mainly contracted during the ovulatory process. A comparison was made with other vertebrate species. Springer-Verlag, 1992 Smooth muscle cells nationallicence Theca externa nationallicence Preovulatory follicle nationallicence Ovary nationallicence Quail nationallicence Coturnix coturnix japonica nationallicence Van Nassauw Luc Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut Callebaut Marc Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut Harrisson Fernand Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut Scheuermann Dietrich Institute of Histology and Microscopic Anatomy, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut Cell and Tissue Research Springer-Verlag 269/1(1992-07-01), 49-56 0302-766X 269:1<49 1992 269 441 https://doi.org/10.1007/BF00384725 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00384725 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Van Nassauw Luc Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut NATIONALLICENCE 700 1- Callebaut Marc Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut NATIONALLICENCE 700 1- Harrisson Fernand Institute of Human Anatomy and Embryology, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut NATIONALLICENCE 700 1- Scheuermann Dietrich Institute of Histology and Microscopic Anatomy, University Centre of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium aut NATIONALLICENCE 773 0- Cell and Tissue Research Springer-Verlag 269/1(1992-07-01), 49-56 0302-766X 269:1<49 1992 269 441 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer