👉 Haematopoisis, or hematopoiesis, is the process by which blood cells from a person's bone marrow are produced. This is also known as erythropoiesis. The term "haematozzoa" refers to the human body's ability to produce red blood cells (hemoglobin) in response to stress, infection, or injury. These red blood cells help carry oxygen and nutrients throughout the body, supporting the body's overall health and function.