Fig. 2.

a Plating efficiency of primary breast cancer patient cells on the CBC-1. Shown are photomicrographs of MTT stained CBC-1 imaged at days 21–22 (patients 19, 20, and 21) and days 28–29 (patients 28 and 29) in culture. Cells were seeded on the CBC-1 at 600–700 cells per well. b Growth of primary breast cancer patient cells on the CBC-1 after 9 days in culture. Shown are bright field photomicrographs of the entire well with 100, 300, 500, 700, and 1,000 starting cell number per well. Colonies appear as black dots. c Scatter plot showing the linear relationship between starting cell numbers and number of colonies forming in each well for the patient shown in b