Examples of 7-Day Old Human Colon Organoid Cultures (Bright Field, 4 x Magnification)
(A) Typical pre-swollen stem cell phenotype of a high quality, proliferated wild type (non-CF) human colon organoid culture.
(B) Non-swollen stem cell phenotype of a high quality, proliferated CF colon organoid culture.
(C) Example of a bad quality CF colon organoid culture with thick-walled, differentiated structures with decreased stem cell phenotype which is often due to low activity of Wnt-3A in WCM.