Provides another method of “non-invasive” blood typing for the classroom setting. By testing their saliva, students are able to determine if they are “secretors” as is 80% of the general population. If they are, students can complete the experiment to determine their ABO blood type. Kit includes return cards for vials of A, B, O red blood cells, vials of anti-A and anti-B serum, Lectin H and a teacher’s manual. Kit contains enough material for 30 students. Kemtec.