Resting naive B cells rarely undergo mitosis 1, do not secrete immunoglobulins and have only basal expression of transcripts 2. After being activated via the B cell receptor or Toll-like receptors, B ...

When cells express specific genes that characterise a certain type of cell we say that a cell has become differentiated. Check your understanding of division and differentiation in human cells. Brush ...

A group of 15 scientists from five countries has discovered evidence of cell differentiation in fossil embryos that are more than 550 million years old. They also report what appear to be cells about ...

This is a preview. Log in through your library . Abstract In most algae, the chloroplast division rate is held constant to maintain the proper number of chloroplasts per cell. By contrast, land plants ...

Blacksburg, Va., October 12, 2006 -- A group of 15 scientists from five countries has discovered evidence of cell differentiation in fossil embryos that are more than 550 million years old. They also ...