Fig. 5 in Fig. 1 in Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population.

Fig. 5. Ordinations from Principal Component Analysis (PCA) on physical factors measured at limpets' resting locations, including temperature, slope, aspects N-S and E-W. Directions of the vectors represent their strengths of correlation with the principal components (higher correlation when more aligned with the axes).