partially acid-fast

partially acid-fast

[pär′shəlē]
capable of retaining the stain carbolfuchsin during mild acid decolorization. This ability is found in bacteria of the genus Nocardia because of the presence of unusual long-chain fatty acids in their cell walls.
References in periodicals archive ?
Species of the genus Rhodococcus (order Actinomycetales, family Nocardiaceae) are aerobic, gram-positive, partially acid-fast, coccoid to rod-shaped bacteria (9).
Gram stain (Figure, C) and a modified acid-fast stain (Figure, D) revealed gram-positive, partially acid-fast filamentous organisms branching at right angles within the eosinophilic material consistent with Nocardia organisms.
The organisms are weakly gram-positive and partially acid-fast.