Mycobacterium leprae is usually positive to periodic acid-schiff and grocott stains - Xavier-Júnior, José C. C. [UNESP]; Ocanha, Juliana P. [UNESP]; Marques, Mariângela E. A. [UNESP]; Marques, Silvio A. [UNESP] (Wolters Kluwer, 2016)