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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Immunofluorescence detection of Oct4 (a) and neuron-glial antigen 2 (NG2) (b) in cells in spheroids that were created by unmodified human adipose-derived stem cells that were cultured for four days in serum-free media (previously unpublished figure). The scale bar represents 20 µm.