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Treatment may have suppressed the organism substantially so that numbers were too low to be identified on acid-fast stain or isolated on culture.
The positive acid-fast stain from one of the calves and one of the students with a confirmed case implicated the obstetrics laboratory as the source of the outbreak.
Demonstration of Charcot-Leyden crystals by acid-fast stains applied on tissues.
The acid-fast stain and culture examinations should be considered together to assess active TB in HIV patients.
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 bug was considered a rare and exotic pathogen until the mid-1980s when a modified acid-fast stain was employed to look for Cryptosporidium in stool specimens, especially from people with impaired immune systems who suffered from HIV disease.
Data of surgical pathology were obtained in seven patients, five cases presented with epithelioid granuloma with caseous necrosis with or without positive acid-fast stain in bowel tissue; two cases presented with epithelioid granuloma with caseous necrosis with positive acid-fast stain in mesenteric lymph nodes.
All state laboratories began routine testing with a modified acid-fast stain for C.
As in many developing countries, the acid-fast stain is the only bacteriologic basis for diagnosing tuberculosis (TB) in primary health care institutions in China, where facilities are limited for M.
In paraffin sections, the organism can be visualized by silver stains, tissue Gram stains, or Fite-Ferraco acid-fast stain.