[tag=RB | lemma=be] [tag=□] □
[tag=RB | lemma=be] [tag=RB] □
Pathophysiology : Legionella species are poorly staining , obligate , aerobic , gram-negative bacilli . Legionellae are poorly staining , Gram-negative bacilli that require cysteine and other nutrients to grow in vitro . The Environmental Protection Agency ( EPA ) has approved this product as a safe for home use , and it will not usually stain carpets . The few teeth he has left are deeply stained by coca-leaves . There are only three moderate-sized packages swinging overhead ; there are only two layers of mats beneath ; and the calabashes and trenchers are not so numerous , nor so tastefully stained and carved .