hey, I don't use that software - but it sounds like a 3 way ANOVA to me;
1) repeated measures - Time (time 1 before/time 2 after)
2) between measures - Strain ( type 1/type 2)
3) between measures - Injection type (control, 1,2,3,4,)
in SPSS you would start off choosing Repeated measures ANOVA, and then put in Strain and Injection type in as Between measures variables so it may be similar on your software perhaps :)