Answer to Question 1
ANS: B
The description fits that of a plasma cell. These are fully differentiated B cells, whose function is to make and secrete specific immunoglobulin (antibody). Because the cytoplasm is rich in ribonucleic acid (RNA) needed for this synthesis, the cytoplasm often stains a brilliant blue.
Answer to Question 2
ANS: D
Spinal fluids should be performed within 30 minutes of collection for all the reasons listed.