1.   As the cells increase in number the outer membrane disappears.

2.   It merely registers the disruption of its outer membrane that such entry causes.

3.   One great improvement involved the outer membrane of the cell.

4.   Others acquired a harder outer membrane to later become skin-like materials.

5.   People with sickle cell anaemia and thalassaemia are known to have red cells with defects in their outer membranes.

6.   The nucleus thus formed divides and two cells develop within the outer membrane.

7.   Even though the outer membrane is only a quarter-inch thick, street noises are muffled, and it is surprisingly peaceful, even meditative.

8.   Molecules like B.M.P. deliver their message by binding to a receptor molecule stick- ing out from the outer membrane of a cell.

9.   Molecules like BMP deliver their message by binding to a receptor molecule sticking out from the outer membrane of a cell.

10.   One small part of the overwhelming evidence is that mitochondria and chloroplasts both retain two outer membranes.