MUMPS VACCINE . . . . . . . Abnormal-toxicity test 98 7. . . . . . . . Test for residual live virus 99 7. Tests for extraneous agents 100 7. Test for Mycobacterium tuberculosis . . . . . Test for extraneous viruses 100 7. . . . . 100 XII 7 . Potency test . . . . . . . Test for abnormal toxicity 102 7. Test for extraneous agents 103 7.