Variation of cord IgM level with birth weight.
D001724:Birth Weight; D005865:Gestational Age; D006801:Humans; D007075:Immunoglobulin M / Q000302:isolation & purification*; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D014470:Umbilical Cord / Q000276:immunology*
D007075:Immunoglobulin M