Mr. Brown's blood typing results showed no agglutination when his blood sample was mixed with either plasma containing anti - A or anti - B antibodies. What is his blood type and what blood type can he receive?

Mr Brown's blood type: AB

He can receive blood from: A, B, AB and O blood type (universal recipient)

Explanation:

Mr. Brown's blood does not exhibit agglutination with both plasma having anti - A or anti - B antibodies. The anti - A antibodies and B antigen are present in B blood type while A blood type has anti - B antibodies and A antigen.

Mr. Brown's blood does not show agglutination for both A and B antigens which means that his blood lack both anti - A or anti - B antibodies. The blood type that lacks both anti - A or anti - B antibodies is "AB" blood type. So, Mr. Brown's blood type is the "AB" blood type.

Since his blood lack both antibodies, he can receive blood from all blood types, that is, A, B, AB, and O.