Prussian Blue stain of what? I assume you mean the bone marrow. Of the list you mentioned only cycloserine causes sideroblastic rings in the bone marrow. I don't think there are two drugs in the list.A pt with prussian blue stain positive . drug options are ..
1. streptomycin
2. pyrazinamade
3. ethumbutol
4. kanamycin
5. rifampin
6. cycloserine
Which 2 drugs causes above positive blood findings and why ?
Is it ethambutolSorry i really made the ques very short ....its prussian blue stain of RBC in bone marrow .... yes beside INH & cycloserine there is another one ........