The granuloma, which is the pathologic lesion in sarcoidosis, is responsible for converting vitamin D to the active vitamin D (1,25-D) form.
Ukukrala kwenyama, nokungumonzakalo wesifo sokukhula kweeseli ezinokukrala kuko okuguqula ivitamin D ibe yivitamin D (1,25-D) ekwimo esebenzayo.