RESUMEN
Duffy blood groups were serologically investigated in 434 individuals from Black Lahu (N = 54), Shan (N = 62), Lisu (N = 74), Red Karen (N = 112), White Karen (N = 102) and Manni (N = 30) in Thailand. High frequency of Fya (0.917-1.0) which is comparable with other Mongoloid populations was observed. The presence of weak-Fya antigen was detected in eight individuals of northern ethnic groups.
Asunto(s)
Adulto , Pueblo Asiatico , Tipificación y Pruebas Cruzadas Sanguíneas , Sistema del Grupo Sanguíneo Duffy/clasificación , Femenino , Frecuencia de los Genes , Genética de Población , Humanos , Malaria Vivax/genética , Masculino , Fenotipo , TailandiaRESUMEN
The use of frozen seeds and the effect of the concentration of formaldehyde, and the removal of 2/3 of the supernatant were investigated in order to facilitate the production of pertussis cellular vaccine. Results indicated that is possible to replace fresh seeds by frozen ones, and the formaldehyde concentration can be increased to 0,2 por cento after the remotion of 2/3 of supernatant, resulting in a good vaccine preparation in a shorter time