For to understand male youngsters sex hor- mone level and its relationship with sex and physi- cal development,using radioimmunoassay,serum sex hormone FSH,LH,PRL,T E2 were deter- mined in 8-19 years old 128 male youngsters.And their sex development degree and physical deelop- ment status ...
male-to-male sexual behaviors,history of HIV antibody testing and sexually transmitted diseases(STDs) infection were collected through self-administered questionnaires.Results A total of 157 participants completed the questionnaire.The average age of initiating the male-to-male sex was 19.7±2.9 years ...
Our data suggest that fetal sex influences maternal plasma cytokine profile and NO in early pregnancy. Women with a male fetus may have a worse capacity to counteract an inflammatory response. They may have better vasodilator capacity, but in the presence of an oxidative environment, a higher ...
hilare males produce a sex pheromone. Extracts of odors collected from sexually mature males contained compounds that were not present in extracts from females or sexually immature males. (4 S )- Cis -( Z )-bisabolene epoxide ((4 S )- cis - Z -BAE) was the major sex-specific component...
This study, the third of a multi-part series on male sexual tubes in hermit crabs, the external morphology of the tube of the western Atlantic Catapagurus sharreri A. Milne-Edwards, 1880 is documented using scanning electron microscopy. The male of this species has an unpaired right sexual ...
involves physical contact between the male and female (on or off the host), male mounting of the female, insertion/maintenance of the male chelicerae in the female genital pore (initiates spermatophore production), and the transfer of the spermatophore by the male into the female genital pore....
Background Male sex workers (MSW) are particularly exposed to sexually transmitted infections (STI) including HIV. In the Netherlands, data about STI among MSW are scarce. We estimated chlamydia, gonorrhoea, syphilis and HIV diagnoses among MSW attending STI clinics and determined associated factors ...
and subjective measurements of pain intensity were measured in 29 healthy male volunteers during two heat stimuli (43°C and 48°C) and the cold pressor... K, Hamunen,V, Kontinen,E, Hakala,... - 《British Journal of Anaesthesia》 被引量: 0发表: 2018年 Dopaminergic role in regulating ...
Objective: To understand sexual orientation and sexual risk behaviors among male college students who have sex with men(MSM), and explore the impacts of social demographics and other factors on sexual risk behavior among them in Changsha city. Methods: After the pre-survey, 240 valid samples were...
Sex expression in Sagittaria guyanensis H.B.K. subsp. lappula (D. Don) Bojin is typically andromonoecious while the other species in the same genus are basically monoecious. The evolutionary advantages of male flowers and hermaphrodite flowers in S. guyanensis subsp. lappula were assessed by ...