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Tissue heterogeneity of metabolic enzyme expression and similarities between xenografts (Xeno) and 3D bioprinted tissue-mimetic scaffolds (3D TMS) of ZR75.1 cells. Immunostainings with anti-p-S6, -GLS, -p-mTOR, -FASN (fatty acid synthase), -LDHA (lactate dehydrogenase A), and -p-ACC (acetyl-CoA carboxylase) antibodies using 3,3′-diaminobenzidine (DAB) (brown) chromogen and haematoxylin counterstaining. Scale bar is given in the first figure.
