What can a bacterium do to respond to high levels of transferrin?

Transferrin is the main protein in the blood that carries iron throughout the body. Iron is an element important to many of the body functions, but its main role is as the building block for hemoglobin, the protein that helps red blood cells bind oxygen for delivery to the tissues. When transferrin levels are high, it indicates a deficiency in iron.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.