Question: are hematopoiesis and haematopoiesis the same thing?
Answer: Haematopoiesis (/hɪˌmætoʊpɔɪˈiːsɪs, ˈhiːmətoʊ-, ˌhɛmə-/, from Greek αἷμα, "blood" and ποιεῖν "to make"; also hematopoiesis in American English; sometimes also h(a)emopoiesis) is the formation of blood cellular components. All cellular blood components are derived from haematopoietic stem cells.