During puberty in both sexes endogeneous estrogen has a biphasic effect on epiphyses where at low levels it leads to an increase in height and bone mass whereas with higher levels this leads to closure of the epiphyses. ...

Apoptosis plays a crucial role in immune homeostasis. The interaction between Fas and FasL, essential molecules in an apoptosis pathway, play an important role in the termination of the immune response, regulation of ...