Later, as the maternal tissues, whose growth has been stimulated during pregnancy, return to their original condition, a further loss in weight takes place.

The function of placentation is to transfer nutrients from maternal tissue to a growing embryo.

The other main theory is that fetal cells home to injured or diseased maternal tissue where they act as stem cells and participate in repair.

The function of the implantation site intermediate trophoblast is to anchor the placenta to the maternal tissue.

The mix of hormones characteristic of early pregnancy promote natural growth of maternal tissues and weight gain.

Additional energy is required during pregnancy due to the expansion of maternal tissues and stores in order to support fetal development.

The term metaxenia was later coined and is still sometimes used to describe the effects on purely maternal tissues.

We must now learn how the maternal tissues assume the responsibility placed upon them.

The aleurone is a maternal tissue that is retained as part of the seed in many small grains.

The brooded juveniles seem to behave as ectoparasites of the female, feeding on maternal tissues in the brood chamber.