The testicular form of angiotensin converting enzyme as a marker for human sperm quality assessment.

Spermatozoa are rapidly changing cellular structures that are highly dependent on their interaction with the environment. These interactions cause fundamental changes in the spermatozoa's cells and membrane.

Developmental exposure to cobalt chloride affected mouse testis via altered iron metabolism in adulthood.

Inroduction: Cobalt (Co) is known to interfere with iron (Fe) metabolism that is essential for differentiating male germ cells. Our aim was to study the effect of developmental chronic cobalt exposure on mouse testis through changes in iron homeostasis in adulthood.

Methods: Pregnant ICR mice were exposed to 75 mg (low dose) or 125 mg (high dose)/kg b.

Early contact between late farming and pastoralist societies in southeastern Europe.

Archaeogenetic studies have described two main genetic turnover events in prehistoric western Eurasia: one associated with the spread of farming and a sedentary lifestyle starting around 7000-6000 BC (refs. ) and a second with the expansion of pastoralist groups from the Eurasian steppes starting around 3300 BC (refs. ).

Stage specific expression of angiotensin-converting enzyme and thickened lamina propria in relation to male fertility.

The testis is an immune privileged organ that provides a specific environment for germ cell development. Various factors responsible for inflammatory changes can lead to deterioration of the immune tolerant model found in the testis. As a result, the thickness of the proper membrane of seminiferous tubules changes and the process of spermatogenesis is disturbed.