[Correlation between the frequency of HL-A antigens and antigens of the P system in the population of Serbia].

We studied the correlation between the antigens of the P system and the antigens and haplotypes of the HLA system in 334 nonrelated persons and 46 chosen families consisting of 166 members. On our material we found a distinct linear correlation between the antigens of the segregant serie A and especially of the segregant serie B and the P antigen of the blood groups. The correlation between the association of the antigens of series A and B and the antigens of the P system same as between the most frequent HLA haplotypes and the antigens of the P system, is also distinct. We described two cases of crossing over between the P and HLA system; the frequency of crossing over of 0,0435. We have confirmed the linkage between HLA and P and the likelihood that the genes are located on the same chromosome.