Which of the following enzymes is used to convert IgM antibodies to IgG antibodies in the context of blood grouping?

A Papain ✓
B Bromelain
C Ficin
D Dithiothreitol

Explanation

Papain is an enzyme that can be used to convert IgM antibodies to IgG antibodies, which can be useful in certain blood grouping tests.

Source

Immunohematology textbook
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium