Task: Answer Verification
Input (English): Question: Is complement receptor 1 red cell expression controlled by the In ( Lu ) gene?
Answer: Nine donors with the Lu(a-b-) phenotype showed suppression of the Lutheran system antigens but normal expression of CR1 glycoprotein and the Knops system blood group antigens. This suggests that the genes that suppress Lutheran system antigens do not suppress CR1 or its related blood group antigens.
Output (English): no