TY - GEN AU - Sigal,Leonard H TI - Basic science for the clinician 58: IgG subclasses SN - 1536-7355 PY - 2013///0207 KW - Humans KW - IgG Deficiency KW - classification KW - Immunoglobulin G KW - chemistry KW - Immunoglobulin Isotypes N1 - Publication Type: Journal Article; Review UR - https://doi.org/10.1097/RHU.0b013e318269446b ER -