Which procedure should not be used during the heating of substances in a test tube? A) Point the test tube away from you.
B) Stopper the test tube to prevent spills.
C) Wear safety goggles.
D) Use a test tube holder to avoid burns.

Which of the following leukocyte is not correctly matched with its function? lymphocytes: immune response against viral infections eosinophil: bacterial macrophage monocytes: macrophage basophils: inflammation eosinophil: bacterial macrophage