Fig. 1From: Relationship between the methylenetetrahydrofolate reductase (MTHFR) rs1801133 SNP and serum homocysteine levels of Zhuang hypertensive patients in the central region of GuangxiComparison of genotypic and allelic frequencies of the methylenetetrahydrofolate reductase (MTHFR) rs1801133 single nucleotide polymorphism (SNP) in the control, non–H-type hypertension, and H-type hypertension groups. The differences in the genotypic and allelic frequencies between controls and hypertensive patients were determined by the chi-square testBack to article page