Partial least-squares (PLS) discrimination between hemocyte-expressed genes and oyster survival phenotypes (Survival and Non-Survival). (A) The graphic shows the X-loadings (w*) of the X variables (qPCR data) and the Y-loadings (c) of the Y variables (S and NS phenotypes), and thereby shows the relationship between X and Y variables. The variables X (black triangles) and Y (black squares) combine in the projections, and the variables X relate to the variables Y. (B) Relationship between hemocyte-expressed genes and oysters from S or NS phenotypes using PLS regression. The cross-validation led to two components represented as t and t.