Study blood group antigen! of 512 blood donors and boarding schools for cthr ic minority students in Bac Kan, Thai Nguyen, Tuyen Quang, the authors draw the following conclusions: Among people collected blood ethnicity Kinh: 28.7 percent
Tay: 20.5 percent, Nung : 12.3 percent. Dao: 12.7 percent, Muong: 12.7 percent, other 13.1 percent. The antigen D, k, Lub, s met with a frequency of 100 percent, S antigen mct with a low frequency of 6.8 percent. antigen K, Lua not met, phenotype DCE met at the most with 57.07 percent, phenotype DCcE met at least 0.7 percent. Phenotype K-k + is 100 percent. Phenotypc Fy (a +. b-) 86.1 percent, phenotype Fy (a- b +). Fy (a-b-) 1.4 percent, Jk (a + b +) 41.1 percent, Jk (a-b-) 5.6 percent. Le (a-b+) 65.5 percent, Lc (a+ b-) 4.3 percent. I.u (a-b +) 100 percent. M + N + 57 percent. M-N- 0 percent, S-s+ 93.2 percent, S- 0 percent, S 6.8 percent.