Group 1	Group 2	Effect size d	A priori power	Group 1 sample size	Group 2 sample size
CD34+/CD31−	CD45+	3.974546	94.6%*	3*	3*
CD31+	CD45+	1.838290	81.8%	6	6

^*6 tumors will be used per group based on the CD31⁺ to CD45⁺ comparison making the power 99.9%.