PubMed Health⌕ Search

Biomedical subjects

K H Lewis

Publications and source records attributed to K H Lewis.

At least 19 recordsLinked to original sources
PubMed1997

Hepatic metastases.

Metastatic disease is the most common cause of malignant liver lesion in the United States. This article focuses on the MR techniques utilized for evaluation of the liver for metastatic disease, the MR appearance of hepatic metastases, and several contrast agents being developed to further improve detection of focal hepatic lesions by MR imaging.

Contrast Media↗
PubMed1967

Examination of market foods for coliform organisms.

Food specimens (490) in nine categories were examined for total aerobic plate count and numbers and types of coliform organisms, including the enteropathogenic Escherichia coli (EEC). The total counts were compared with various suggested standards, and a limit of 100,000/g appeared to be a realistic goal, except for certain food types with a high level of natural flora. Plate counts in VRB were compared to counts obtained by isolation by enrichment in LST Broth, and the latter method produced a higher percentage of isolations. The presence of E. coli was determined by use of EC Medium incubated at 44.5 +/- 0.1 C. Only 40.4% of the positive EC tubes, however, contained E. coli. It appeared that a limit of 10 coliform organisms per g as a suggested standard could be met with several types of foods. Isolation of EEC was obtained only three times, or in 0.6% of the specimens.

Enterobacter↗
PubMed1967

Serological identification of enterotoxigenic staphylococci from cheese.

Single and double gel-diffusion techniques were employed to examine serologically coagulase-positive staphylococci from cheese for enterotoxigenicity. Supernatant fluid from sac cultures was examined for enterotoxins A and B. The results indicated that 9 of 155 cultures from market cheese and 7 of 77 cultures from food-poisoning cheese produced enterotoxin A, and that none of the cultures produced detectable levels of enterotoxin B. Results of serological tests were confirmed by intravenous injection of cats.

Journal Article↗