Results The taste-blindness rate was 5.18 % in Dong nationality juveniles without obvious difference between males and females but the average threshold value of taste was significantly higher in females ( 9.32 ± 1.56 ) than in males ( 8.84 ± 1.68 P < 0 01 ) .

结果侗族青少年 味 盲率为 518%，男女间无明显差异，但尝味者平均尝味阈值女性（9.32±1.56）明显高于男性（8.84±1.68，P<001）。

Methods To adopt the way of deciding taste-blindness with threshold to determine the sensitivity to the taste on PTC of 219 Han nationality juveniles .

方法采用阈值法测定219名汉族青少年对PTC的 尝味敏感性。

There is a significant difference in the taste threshold between sexes ( P < 0.01 ) and the difference of the frequency of taste-blindness between Sexes is also significant ( P < 0.05 )

男女 尝味阈值差异显著（P<0.01）；不同性别 味 盲 率差异亦显著（P<0.05）。

The Gene Frequency of Taste-blindness for PTC Mongolian and Han Nationalities of Inner Mongolia

内蒙古蒙、汉民族 PTC 味 盲基因频率

Analysis of Taste-Blindness Frequency for Phenyl-thiocarbamide in Bai and Naxi Nationalities in Province of Yunnan China

云南白族及纳西族苯 硫脲味 盲频率的分析

Objective To determine the taste-blindness gene frequency of Han nationality juveniles to PTC in Henan Province .

目的测定河南省汉族青少年 苯 硫脲 （ PTC ） 味 盲基因频率。