670 nm light treatment significantly increased the expression level of PLGF in HTR8/SVneo cells cultured on pECM from healthy patients and patients diagnosed with late onset preeclampsia (light: control 162 ± 12.07; pre-E 172 ± 12.22) compared to untreated cells (no light: control 100 ± 15.8; pre-E 67 ± 9.5) in both groups (Figure 7(a)). The gene discussed is PGF; the disease is preeclampsia.