Immunohistochemical analysis of eotaxin expression in human neonatal thymus. Human neonatal thymus (1 week) was sectioned and prepared for eotaxin staining as detailed in Materials and Methods. (A) Negative control. (B and C) Staining of eotaxin around cells with dendritic morphology and in Hassle’s corpuscles, respectively. Results are representative of n = 3 separate donors.