Although widely used, serological typing of HLA loci does not always produce uequivocal results. This may be particularly the case for cord blood since samples may be of small volume and poor quality, and contaminated.
Cellular Biotechnologies and Hematology Department, Tissue Typing Section, Blood Bank, La Sapienza University, via Chieti 7, 00161 Rome, Italy. laurenti@bce.med.uniroma1.it