Spermatogenesis is a complex process of male germ cell development in which the diploid spermatogonia undergo series of mitotic divisions and differentiation steps culminating into the preleptotene spermatocytes which then ...

The major evolutionary transition from single-celled to multicellular life is believed to have occurred independently of the main metazoan lineages in the cellular slime moulds, of which Dictyostelium discoideum is the ...

Gliomas are the most common primary brain tumors and include astrocytomas, oligodendrogliomas and oligoastrocytomas. Astrocytomas have a high frequency of occurrence as compared to the other gliomas and several studies ...