A patient has the red cells typing: anti-D: 4+, anti-C: 0, anti-E: 0. Which genotype is consistent with these results?

The patient's red cell typing results indicate strong reactivity with anti-D (4+) and no reactivity with anti-C or anti-E. This significant reaction to anti-D suggests the presence of a D antigen on the red blood cells, which is characteristic of a Rh-positive phenotype.

To interpret these results in terms of genotype, it is essential to consider the specific antigens present and absent on the red blood cells.

The genotype R0R0 corresponds to having the D antigen (Rh-positive) without any CcEE antigens, meaning the individual lacks both C and E antigens. This aligns perfectly with the results showing strong positive reactivity with anti-D and negative reactivity with anti-C and anti-E.

In contrast, the other genotypes would imply the presence of the C or E antigens, which does not support the typing results where both anti-C and anti-E are negative. Therefore, the genotype R0R0 (which has the D antigen and no C or E antigens) is indeed the one that is consistent with the provided results.