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. 2020 Nov 5;14:590500. doi: 10.3389/fncel.2020.590500

Figure 2.

Figure 2

Increased microglia proliferation on soft substrates under resting conditions. (A) Representative images show Iba-1 positive microglia (red) double-stained for BrdU (green) to detect proliferating cells on substrates of 1.2 MPa, and (B) soft substrates of 0.6 kPa (scale bars = 100 μm). (C) Microglia proliferation measured by bromodeoxyuridine- (BrdU-) incorporation over 6 h increased with substrate elasticity (*p < 0.05 as compared to 1.2 MPa; n = 7). (D) In parallel, changes in microglia mRNA expression of Ki67 yielded an increasing yet statistically not significant trend on softer substrates (values displayed as fold change normalized to RPL13a and glass control; n = 5).