Mosab Nouraldein Mohammed Hamad2023-12-132023-12-132018https://ds.eaeu.edu.sd/handle/10.58971/843Biological resistance against falciparum malaria Hemoglobin S : Protection is offered only to heterozygous persons ( HbAS) , cells containing HbAS sickle more quickly when they contain parasites than when they are non parasitized , because the parasites lower the PH which leads to damage and sickling .other