Pappenheim stain

Pap·pen·heim stain

(pahp'ĕn-hīm),
a methyl green-pyronin stain, originally used as a stain for lymphocytes.

Pappenheim stain

(1) Methyl-green pyronin method. 
(2) A rarely used histological method for differentiating Mycobacterium tuberculosis from non-pathogenetic Mycobacterium smegmatis.

Pappenheim,

Artur, German physician, 1870-1916.
Pappenheim stain - a method for differentiating tubercle and smegma bacilli.
Unna-Pappenheim stain - see under Unna, Paul G