[Histochemistry of mucosubstances. Technical considerations]

A report concerning the histochemical methods used to differentiate mucosubstances and certain technical modifications made with the aim of obtaining better results : 1) rapid passage in a solution at pH1 after alcian blue reaction in order to ensure staining of sulfate mucosubstances only ; 20 plunging of sections first in FeCl for 10 minutes by the H.I.D. method ; 3) in the methylation reaction the optimum time is 12 hours.