FIG. 4.

(A) i: Immunocytochemistry pictures of macrophages (in red) in each scaffold of the chips. ii: Magnified pictures of conditions D1 1% Chi ι-Carr H (left) and D1 1% Chi k-Carr L (right) where the morphology of the lymphocytes can be observed. (B) i: Immunocytochemistry pictures of lymphocytes (in green) and staining of the nucleus (DAPI, in blue) present in each scaffold of the chips. ii: Magnified pictures of conditions D7 2% Chi ι-Carr H (left) and D7 1% Chi k-Carr M (right), where the morphology of the macrophages can be observed. Some macrophages are indicated with white arrows. Scale bar=50 μm. k-Carr, k-carrageenan; ι-Carr, ι-carrageenan. Color images available online at www.liebertpub.com/tec