They wanted children, but Clara had suffered an ectopic pregnancy, in which the fertilized egg was implanted in a fallopian tube rather than the uterus, and she had been unable to have any.
We start as a fertilized egg; become an embryo consisting of immature, undifferentiated cells; then gradually develop into a body of specialist cells, including blood, bone, muscle and skin.
Many of them may encode molecules that help guide our development from a fertilized egg to a healthy adult, for example.
) Tsien noticed that the receptor worked more efficiently when teamed[3] with the gene NR2B, so he introduced extra NR2B genes into a batch of fertilized mouse eggs.
) Tsien noticed that the receptor worked more efficiently when teamed with the gene NR2B, so he introduced extra NR2B genes into a batch of fertilized mouse eggs.
Tough lyme grass sprang up, withered, rotted, and fertilized the soil; many different kinds of grasses and plants followed, until the bank became a green island.
