Summary: From 2013: Ian Woolf reports on Vel-negative blood, What are A, B and O, and what is RH negative and positive? Ian Woolf speaks with with Joe Patkes, Red Cell Serologist at the Red Cross Blood Services centre in Alexandria about blood types, blood processing and transfusions. Hosted and Produced by Ian Woolf Support Diffusion by making a contribution Support Diffusion by buying through affiliate links
