The persistence of spermatozoa, seminal acid phosphatase, choline and seminal bloodgroup antigens in the human vagina after sexual intercourse has been studied and the following results obtained. 1. Spermatozoa were usually found up to 3 days after intercourse and were occasionally found up to 6 days afterwards. Smears without spermatozoa were obtained from swabs taken as early as 28 hours, but...

background: in previous investigations, it has been clarified that electromagnetic fields (elf) can cause some changes in cellular behavior. the aim of this prospective study was to investigate the effect of magnetic field (mf) on human sperm parameters of motility, morphology, and viability. materials and methods: semen samples were collected from 12 fertile men, and were allowed to liquefy fo...

Antisera prepared by hyperimmunizing syngeneic 129 mice with primitive teratocarcinoma (PTC) cells have allowed the detection of a specific antigen on the surface of these cells (Artzt et al., 1973). This antigen was found to be also present on the surface of mouse spermatozoa and early embryonic cells (morulae), but not on any other differentiated cell type derived either from adult mice or te...

abstract background: sperm parameters and motion kinetics are affected by cryopreservation. objective: the main purpose of the current study was to determine the effect of different concentrations of trolox as an antioxidant to freezing-thawing procedure on human sperm kinematic parameter. materials and methods: semen was collected from 20 normal donors and divided into five aliquots prior to c...

BACKGROUND Cancer/testis (CT) antigens are cancer antigens normally expressed in adult testicular germ cells. The expression of chromosome X-encoded CT antigens (CT-X antigens) in human fetal gonads and in testicular seminomas was examined. METHODS The expression of 10 CT-X antigens (MAGEA, NY-ESO-1, GAGE, CT7/MAGEC1, CT10/MAGEC2, CT45, SAGE1, SSX2, NXF2 and SPANX) was studied immunohistochem...

The temporal expression of cell surface antigens during mammalian spermatogenesis has been investigated using isolated populations of mouse germ cells. Spermatogenic cells at advanced stages of differentiation, including pachytene primary spermatocytes, round spermatids, and residual bodies of Regaud and mature spermatozoa, contain common antigenic membrane components which are not detected bef...

Spermatozoa achieve functional maturity during their transit through the epididymis and this maturation process is accompanied by changes in the composition and proteins of their surface. The addition of secretory products from the epididymis to the plasma membranes of the spermatozoa is considered to be a prerequisite for the acquisition by the spermatozoa of the capacities for forward motilit...