Table 1. Immuno- and histochemical quantification of plaque cells in culture.

Indexed area of cells from the total section area in percentages for populations of α-SMA⁺ smooth muscle cells, CD68⁺ macrophages, and aniline blue⁺ collagen and fibroblasts at days 0, 4, 7, and 19; indexed quantity of cells per 1 cm of vessel circumference for H&E endothelial cells at days 0, 4, 7, and 19. Medians and IQR for plaques from six donors cultured for 19 days are presented.

Cell type/day of culture	α-SMA+, % from total area	aniline blue+, % from total area	CD68+, % from total area	H&E, per 1 cm of vessel circle
Day 0, Me [IQR]	11.5 [8.8–17.5]	82.9 [74.2–86.8]	11.9 [5.2–13.7]	13.9 [5.3–22.3]
Day 4, Me [IQR]	19.6 [16.4–20.3]	79.4 [72.5–85.1]	4.9 [4.6–5.1]	4.3 [2.5–9.5]
Day 7, Me [IQR]	11.9 [10.5–14.8]	81.1 [71.1–83.3]	8.3 [4.3–14.2]	4.6 [1.2–11.7]
Day 19, Me [IQR]	15.6 [13.9–17.0]	84.4 [73.9–88.7]	4.1 [2.0–5.9]	10.1 [2.9–11.5]
p-level	0.066	0.204	0.133	0.294