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Oil Red O, H&E, and Collagen I staining of engineered human white adipose tissues (eWATs) induced by growth medium (GM) and conditioned medium (CM). (a) Microscopical images of Oil Red O, H&E, and Collagen I staining of eWATs induced with CM and GM. Scale bar=100 μm. (b) Mean optical density of eosin in H&E staining (n=3). (c) Mean optical density of collagen I (n=3–5).
