What is "haematopoiesis"

n. (label en British spelling) (alternative spelling of hematopoiesis English)

n. the formation of blood cells in the living body (especially in the bone marrow) [syn: hematopoiesis, hemopoiesis, haemopoiesis, hemogenesis, haemogenesis, hematogenesis, haematogenesis, sanguification]

Haematopoiesis (from Greek αἷμα, "blood" and ποιεῖν "to make"; also hematopoiesis in American English; sometimes also haemopoiesis or hemopoiesis) is the formation of blood cellular components. All cellular blood components are derived from haematopoietic stem cells. In a healthy adult person, approximately 10–10 new blood cells are produced daily in order to maintain steady state levels in the peripheral circulation.