The presence of immature red blood cells in the circulation can indicate bleeding from an unknown source. these immature cells are known as

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."