In mammalian cells, the activity of the sites of initiation of DNA replication appears to be influenced epigenetically, but this regulation is not fully understood.Most studies of DNA replication have focused on the activity of individual initiation sites, making it difficult to evaluate the impact of changes in initiation activity on the replicati
The human endometrium undergoes sequential phases of shedding of the upper functionalis zone during menstruation, followed by regeneration of the functionalis zone from the remaining basalis zone cells, and secretory differentiation under the influence of the ovarian steroid hormones estradiol (E2) and progesterone (P4).This massive tissue regenera
The family Heleophrynidae is restricted to Southern Africa Light Box and comprises two genera with seven species.Tadpoles are well adapted, with huge sucker mouths, to live in the fast flowing headwaters of mountain streams.The unique sucker-like mouth has numerous transverse rows of labial teeth, which are used to attach themselves to the rock sur