The causative organism in localised juvenile periodontitis is Actinomyces actinomycetem comitans which is:**
A. Gram positive facultative aerobic
B. Gram positive facultative anaerobic non-motile rod
C. Gram negative facultative anaerobic non-motile
A. Gram positive facultative aerobic
B. Gram positive facultative anaerobic non-motile rod
C. Gram negative facultative anaerobic non-motile