Fig. 26. Light micrographs immunohistochemically demonstrate the distribution and relative amounts of hyaluronan in the human trabecular meshwork. A. Normal 47-year-old. Red staining for hyaluronan is confined primarily to the juxtacanalicular (JCT) region (rectangle shown at higher magnification in inset) and in the walls of the collector channels (asterisk). B. Less staining is evident in the meshwork of a normal 66-year-old.