Final answer:
Leukemia refers to a group of cancerous conditions involving the overproduction of abnormal white blood cells. This can include myelocytic or lymphocytic leukemia. Chronic leukemia involves the accumulation of mature leukocytes, while acute leukemia involves an overproduction of immature leukocytes.
Step-by-step explanation:
True. Leukemia refers to a group of cancerous conditions involving the overproduction of abnormal white blood cells. There are two main types: myelocytic leukemia, involving the myeloid line, and lymphocytic leukemia, involving the lymphoid line. In chronic leukemia, mature leukocytes accumulate, while in acute leukemia, there is an overproduction of young, immature leukocytes. These abnormal cells do not function properly.