(a)
(b)
Figure 1: Single nucleotide polymorphism genotyping by MALDI-TOF mass spectrometry on Sequenom MassARRAY 4 platform. Fragments of mass spectra of specimens with different genotype. (a) Rs1021261: GG (A), GT (B), and TT (C). (b) Rs3772130: AA (A), AG (B), and GG (C).