In plasma cultures, with or without tissue, tubercle bacilli form characteristic streptothrix-like colonies of loosely twisted skeins of threads. In plasma tissue cultures embryonal connective tissue and epithelial cells phagocytyze tubercle bacilli freely. Splenic tissue cultures from fourteen day or older embryos if inoculated with isolated bacilli will phagocytyze and prevent the development...

Biochemical study on the metabolism of murine leprosy bacilli was first com menced by Hanks (1951). According to his report, the hydrogen transfer capacity of the bacilli was so feeble that only 0.8ƒÊmole of TTC (Triphenyl Tetrazolium Chloride) was reduced per mg nitrogen of the bacilli after 24 hours' incubation at 37•Ž. Soon after, Gray (1952) has found by manometric method that only 5 cmm of...

The production of β-lactamase enzymes is the main mechanism of resistance to β-lactam antibiotics in gramnegative bacilli. Therefore, it is important to identify the β-lactamases-producing bacteria for the treatment of caused infections. This article aimed to review the recent literature and guidelines regarding phenotypic detection of β-lactamases in common gram-negative bacilli in clinical sa...

background :  nosocomial infections are considered as health issues that affect developed and poor countries. these infections can be transmitted to patients through hospital environment and equipments. the aim of this study was to evaluate the prevalence of gram-negative bacilli in the environment and the equipments of hospitals in the east of golestan province in 2015.   methods :  in this st...

When leprosy bacilli from human patients are inoculated into the foot-pads of CFW mice, a microscopic granuloma containing acid-fast bacilli develops in a characteristic manner. This has been seen in 22 of 22 instances with leprosy bacilli from nasal washings, in 12 of 16 instances with leprosy bacilli from skin biopsies, and in none of 16 cases where the nasal washings were not observed to con...

The activity of different analogs of pyrazinamide on Mycobacterium tuberculosis fatty acid synthase type I (FASI) in replicating bacilli was studied. Palmitic acid biosynthesis was diminished by 96% in bacilli treated with n-propyl pyrazinoate, 94% in bacilli treated with 5-chloro-pyrazinamide, and 97% in bacilli treated with pyrazinoic acid, the pharmacologically active agent of pyrazinamide. ...

Gingivitis is an inflammatory destructive disease mainly caused by microbial plaques. Gram-positive and gram-negative bacilli or cocci have been isolated from dental plaque and gingivitis. This study was going to isolate and characterize the pathogenic bacteria from gingival of 100 patients with oral gingivitis. Enriched and specific media used for isolation of bacteria. Identification of isola...

In this study the attempt has been made to follow the fate of tubercle bacilli in the lung, liver, spleen, kidney and bone marrow of rabbits infected intravenously with large and small doses of human and bovine tubercle bacilli by determining the number of colonies recoverable from similar quantities of tissue on egg media at varying intervals during the course of infection. This method offers ...