title: High IgM levels in women coincide with reproductive phase.
abstract: Quantitation of IgM in 875 individuals ranging in age from 2 to 95 years revealed that levels in females increased steadily until 15 years of age, remained high until 40, decreased during the forties and fifties and remained stable after 60. Levels in males remained stable after 2 years of age.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D044383:Black People; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007075:Immunoglobulin M / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011627:Puberty; D012737:Sex Factors; D044465:White People
chemical_list: D007075:Immunoglobulin M