In animals, the signaling molecules used within ... they have the potential to produce different types of differentiated cells (for example, the marked stem cells that produced the white sectors ...

Specialised cell type Animal or plant cell ... ions to help 'recharge' the cell Red blood cell Animal Carries oxygen to body tissues that require it Contains the protein haemoglobin, which ...

To help animals do all the peculiar things that they, or should I say, we can do there are many specialised cells. Red blood cells for example, have no nucleus, so they can hold more oxygen.

Epithelial tissues are layers of tightly connected cells and make up the basic ... sufficient to explain the diversity of animal tissue forms. For example, during a process in the development ...