👉 Hematocytogenesis is a biological process where red blood cells (RBCs) grow in size and become more round. This process occurs during pregnancy, when there are an increased number of RBCs produced by the placenta to meet the growing needs of the fetus. Hematocytogenesis can also be seen in some forms of cancer or certain types of infections where the body's immune system is trying to fight off the infection. Human factors that could influence hematocytogenesis include