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Morphology of hAECs cultured in medium containing serum substitute supplement (SSS). Bright field micrograph of (A) loosely attached cell at passage 5; (B) floating cells at passage 5. Hematoxylin staining of (C) Freshly isolated hAECs; (D) hAECs at passage 1; (E) hAECs cultured in standard medium containing fetal calf serum at passage 5.
