1.   At some point in the sequence leading to a mature cell, an interaction of some kind must occur between the protein and the receptor.

2.   Acevedo believes that when a mature cell becomes cancerous, it reverts to a perverse embryonic state.

3.   Plasticity is the ability of a stem cell to turn into several types of mature cell.

4.   Researchers and manufacturers prefer fetal cells because they can go through many more divisions than mature cells.

5.   Stem cells, when they divide, produce daughter cells which can either remain as stem cells or develop into mature cells of the relevant type.

6.   The mature cells are mere pawns, with a single role.

7.   The lines must have the ability to generate different categories of mature cells.

8.   The researchers then made the stem cells from the chemically induced embryo divide into various types of mature cells like muscle, brain and intestinal cells.

9.   The treatment would encourage immature stem cells in the marrow to divide, leading to production of mature cells in the immune system.

10.   These are constructed outside the body, with mature cells grown on special matrices.