Dear Sirs: I so enjoy your articles and letters and read all very carefully. Recently there have been series of comments and letters regarding the gene present in the Y-Chromosome in the blood off Irish Males. I discarded the one particular article describing name of the abnormality and the description of the iron collecting in the red blood cells. I do not need the group number but rather the scientific name so that I can do further reading on the subject. Could you send me a repeat of that information? Thank you, Sincerely, [email protected]