Catlin, B. Wesley (Marquette University, Milwaukee, Wis.) and Gertrude M. Schloer. A defined agar medium for genetic transformation of Neisseria meningitidis. J. Bacteriol. 83:470-474. 1962.-An agar medium was developed for use in quantitative genetic studies of Neisseria meningitidis strain 15. It contains eight inorganic salts, sodium citrate, sodium lactate, arginine, cysteine, glycine, sodi...

Modified New York City (MNYC) medium and PPLO medium without methylene blue (PPLO agar) were compared for their ability to support the growth of Mycoplasma pneumoniae from clinical specimens. Pharyngeal specimens were collected from 1,070 college students who visited the Syracuse University Student Health Center. Of these patients, 623 were symptomatic for respiratory infection, and the remaini...

In a comparison of Lowenstein's medium with two agar media, 7H10 without and with the addition of Triton WR 1339, 4,100 sputa were planted on all three, yielding 803 (19.6%) positive cultures. The addition of Triton WR 1339 to the 7H10 medium made it possible to observe the cord formation directly on the isolation plates and did not alter, in any respect, the results obtained with the basic 7H1...

BACKGROUND A range of strategies have been adopted to prevent early onset Group B Streptococcal (EOGBS) sepsis, as a consequence of Group B Streptococcal (GBS) vertically acquired infection. This study was designed to provide a scientific basis for optimum timing and method of GBS screening in an Australian setting, to determine whether screening for GBS infection at 35-37 weeks gestation has b...

Media for isolation of Haemophilus sp. from the conjuctiva were compared in an oasis in southern Tunisia where severe trachoma and seasonal epidemic purulent conjunctivitis are common. Of 89 children tested, IsoVitaleX-supplemented chocolate agar yielded Haemophilus in 87%, plain chocolate agar in 75%, sheep blood agar with a stab of Staphylococcus epidermidis in 74%, and Fildes medium in 58%. ...

The purpose of the present study is to compare the tomato juice agar, a well known medium employed to observe ascospore formation, with niger seed agar, casein agar and sunflower seed agar, applied to a differentiation between C. dubliniensis and C. albicans. After 48 hours of incubation at 30 degrees C all 26 (100%) C. dubliniensis isolates tested produced chlamydospores on tomato juice agar a...

Twelve lots of commercially prepared Mueller-Hinton agar from four medium manufacturers were evaluated for performance with recommended quality control organisms, medium pH, agar depth and uniformity, and characteristics of the zones of inhibition. Only 2 of 12 lots were acceptable for disk diffusion susceptibility tests. Significant problems were observed with the preparation and pouring of th...

Three selective media (chromID C. difficile agar, taurocholate cycloserine cefoxitin agar [TCCA; homemade], and CLO medium) were compared from 406 stool samples of patients suspected of having Clostridium difficile infection. The sensitivities of chromID C. difficile agar at 24 h and 48 h, CLO medium, and TCCA were 74.1%, 87%, 85.2%, and 70.4%, respectively.

A new medium (lecithin and levofloxacin [LL] medium) is described for the isolation of Listeria monocytogenes from food samples. LL medium includes lecithin from soybeans for the detection of phosphatidylinositol-specific phospholipase C (PI-PLC) and phosphatidylcholine-specific phospholipase C (PC-PLC) produced by L. monocytogenes. Levofloxacin is incorporated to inhibit the growth of microorg...

background: streptococcus agalactiae, also known as group b streptococcus (gbs) is a commensal organism in the urogenital tract and rectum in approximately 25% of the healthy adult female population. the bacterium is the leading cause of bacterial meningitis, pneumonia, and sepsis in human infants. materials and methods: our study was performed over a three - month period from april to june 201...