| colostrum | The first milk secreted by an animal coming into lactation. May be especially rich in maternal lymphocytes and immunoglobulins and thus transfer immunity passively. (18 Jul 2002) |
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| colostrum corpuscle | One of numerous bodies present in the colostrum, supposed to be modified leukocytes containing fat droplets. Synonym: Donne's corpuscle, galactoblast. (05 Mar 2000) |