Stem cells in the bone marrow express different molecular markers depending on whether they form bone or other tissue types ... basis of their morphology under the microscope.

Cells are the smallest units of life. But even within the same tissue or organ, they are not all identical. New variations arise continuously during cell proliferation. While genetic mutations alter ...

The finding amazed colleagues, who had never imagined that even a trace of still-soft dinosaur tissue could ... have red blood cells in that bone?” Sure enough, under a microscope, it appeared ...