<prompt> Life-span of Neutrophil -15 days6 hours6 days10 days  <response>: Ans. is b i.e., 6 hoursLife of granulocyte Neutrophil in circulation is normally 4 to 8 hours and another 4 to 5 days in tissues. Also knowLymphocytes may beSho lived --- Life span 2 weeksLong lived -- Life span upto 3 yearsMonocytes in Circularion -4 1-3 days.Plateletes -- 7-10 days. 