Mammary gland transplantation data and logistic regression analysis.

1Transplant groups (donor:recipient): S:S (susceptible:susceptible); S:F1 (susceptible:F1); R:F1 (resistant:F1); R:R (resistant:resistant). Susceptible = WF inbred strain; Resistant = resistant Mcs1a congenic line Y4; F1 = WFxY4 or Y4×WF.2Logistic regression was used to estimate the effect of donor and recipient and the interaction between donor and recipient for the dependent variable of mammary gland transplant carcinoma susceptibility (outcome = carcinoma presence or absence at transplant site) in susceptible WF and Mcs1a resistant congenic transplant groups.*Statistically significant.