Fig. 7
From: Chick fetal organ spheroids as a model to study development and disease
Electron microscopy (EM) of fetal brain and lung spheroids. a, d SEM and b, c, e, f TEM images of brain and lung spheroids. EM of fetal brain spheroids indicated the presence of nerve fibers (a, arrows in inserts), neuro-filaments (b, asterisks), astrocytes (a, c; asterisk) and dendrites (c, arrowhead). EM of fetal lung spheroids identified the presence of ciliated lung cells (d, arrows), alveolar lumen (e, asterisk) and alveolar septal walls (e, arrowheads), and lamellar bodies (f, arrow heads) in type II alveolar epithelial cells (f, asterisk). Scale bars: 10 μm (white), 2 μm (black)