(Fig. 1) production.16Progesterone receptorsare involved in signal cascading that enhances survival and prevents apoptosis of garnulosa-lutein cells.17Apart from acting as a promoter of ovarian follicle luteinization and development progesterone is also responsible for gonadotropin surge, proliferation ...
the two testes are enveloped in a sac of skin, thescrotum, lying below and outside the abdomen. Besides producing the germ cells, orgametes, the ovaries and testes are the source of hormones that cause full development of secondary sexual characteristics and also the proper functioning of the...
(1987a)noted edema, congestion, anddesquamationof lining cells of the seminiferous epithelium in rats gavaged daily for 12weeks with 45mg/kg/day of malathion. The same treatment also lowered the pH of the seminal fluid, decreased testicular protein, decreased relative testis weight, and ...
In humans, there are three key steps to reproduction, which are sexual intercourse and fertilization, embryonic/fetal development, and birth.Answer and Explanation: Haploid reproductive cells are cells that contain half of an individual's genetic information as a single set of chromosomes. Haploid ...
cells that form the inner layer of the theca, and granulosa cells (Fig.2) [57]. Those cells produce reproductive hormones and support ovarian follicles. The granulosa cells are also the main sites of the synthesis of progesterone and estradiol in the ovary. The theca cells are found between...
The epididymides and the vasa deferentia are attached to the testicles and are important in transporting sperm cells after they develop in the testes. The term testicles include the testes as well as the surrounding structures, such as the vas deferens and the epididymis. These two names, te...
The sexual reproduction whereby vegetative cells come in contact and sexual apparatus is alltogther absent is known as View Solution [A] : In Parthenogenesis , fertilized egg is stimulated to divide . [R] : It is a type of reproduction through which animals are not able to eliminate non adap...
Green, apoptotic cells by TUNEL assay; Blue, nuclei stained with DAPI. Data are represented as mean ± SEM.*p < 0.05, **p < 0.01, ***p < 0.001, ns, not significant (p > 0.05). Student's t-test for A, C, E and G. See also Figures S1–S4. Tet2 Deficiency Has Only Minor ...
These pig sera were also detected with the commercial ELISA kit (IDEXX, Westbrook, ME, USA). A total of 1534 clinical pig sera were collected from the pig farms in Shaanxi province, China, and were tested using the commercial ELISA kit and the two developed cELISAs in the study. Cells,...
Even when human prepubescent germ cells were transplanted into mouse testes, the cells preserved themselves by migrating to the "basement" membrane of the seminiferous tubule where they were maintained for months. The expression of several novel genes known to be essential for stem cell self-renewa...