spermatogenesis in English
Reproductive maturity is achieved with the establishment of regular menstruation and ovulation in females and mature spermatogenesis in males.
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1. These sperm types are produced during post-embryogenesis, and eupyrene spermatogenesis precedes Apyrene spermatogenesis.
2. Stage of active spermatogenesis in Acinuses (Fig
3. Eupyrene spermatogenesis is regular and highly sensitive to genetic and experimental manipulations while Apyrene spermatogenesis is irregular and withstands these manipulations
4. Eupyrene spermatogenesis is regular and highly sensitive to genetic and experimental manipulations while Apyrene spermatogenesis is irregular and withstands these manipulations
5. Excess testosterone evidenced by the beard may indicate mild immunosuppression, which may support spermatogenesis.
6. Defective spermatogenesis and genital tract obstruction are the main causes of Azoospermia (3)
7. In E. punctata, protandry occurred with one complete annual cycle of oogenesis and spermatogenesis.
8. Spermatogenesis in the gypsy moth, Lymantria dispar (L.), involves the differentiation of two sperm types, Apyrene and eupyrene
9. As spermatogenesis progresses, there is a widespread reorganization of the haploid genome followed by extensive DNA compaction.
10. Aspermia and recovery of spermatogenesis in cancer patients following incidental gonadal irradiation during treatment: a progress report Radiology
11. Boll A gene on chromosome 2q33 that encodes a putative RNA-binding protein which may be required during spermatogenesis
12. First, AIDS, human papilloma virus, and other than small sperm, condoms can block all kinds of spermatogenesis may not be able to block the virus.
13. Synthesis of proteins, such as histones, protamines and also acrosomal basic protein, occurs during spermatogenesis when little or no RNA is made.
14. The expression of genes are subject to meiotic sex-chromosome inactivation(MSCI) during spermatogenesis, but lots of gene transcripts are reactivated in postmeiotic.
15. These features prompted us to initiate the biochemical characterization and sequence analysis of Apexin to learn about its potential contribution to spermatogenesis and/or fertilization
16. A full scale spermatogenesis with massive accumulation of spermatozoa in the epididymis is reported in 2 five years old maraloid stags, shot on February 4th, after displaying the whole register of rutting behaviour for at least 6 weeks preceeding the investigation.
17. Telford et al., 1962; MHW, 1999] Reproductive toxicity Lowest oral (diet) LOEL (male rat) = 42.3 mg/kg-bw per day: decreased absolute and relative testis weights, testis tubule atrophy and decreased spermatogenesis (18-month study) (Takagi et al., 1994)
18. Apyrene sperm may contribute to (i) nonadaptive errors during spermatogenesis, (ii) the transport or activation of eupyrene sperm for successful fertilization, (iii) enhanced fertilization success in the presence of sperm competition, and (iv) nutrients for females or eupyrene sperm
19. Up to 10% cash back · Changes in the morphology and quantity of mitochondria and mitochondrial DNA during eupyrene and Apyrene spermatogenesis in the silkworm were examined by electron microscopy and by fluorescence in situ hybridization with a 2 kb silkworm mitochondrial DNA clone (pBmMtE2)
20. Three factors were suggested to contribute to the reported higher level of F1 sterility in males than females: (i) survival of males with high numbers of breaks, (ii) crossing-over in spermatogenesis but not in the achiasmatic oogenesis, and (iii) a higher impact of induced changes on the fertility of males than females.