The definitive identification of clinically significant isolates is:
a. always necessary and should be carried out by the laboratory at all times.
b. desirable in most cases; however, limited identification may sometimes be necessary and helpful.
c. often not cost effective and should be performed only when requested by the attending physician.
d. not necessary in most cases and should not be routinely performed by the laboratory.
B
The definitive identification of clinically significant isolates, although desirable in most cases, is not always necessary and is often not cost effective. Limited identification may be helpful and all that is necessary.
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Which process, Figure A, B, or C, depicts activation and action of cytotoxic T-cells?
1.A
2.B
3.C
The Khmer Empire was known best for
a. monumental cities, a large livestock base, and an extensive alphabet. b. monumental cities, extensive road networks, and vast trading routes. c. ritual sacrifice, a rigid religious system, and monumental temples. d. unique pottery work, an extensive alphabet, and vast trading routes.
A diploid somatic ("body") cell has 2n = 20 chromosomes. At the end of mitosis, each daughter cell would have ________ chromosomes. At the end of meiosis I, each daughter cell would have ________ chromosomes
At the end of meiosis II, each daughter cell would have ________ chromosomes. A) 20, 20, 20 B) 20, 10, 10 C) 20, 20, 10 D) 10, 10, 10
The diarrhea associated with enteropathogenic Escherichia coli (EPEC) is the result of:
A. Plasmid-mediated A/E histopathology with disruption of normal microvillus structure resulting in malabsorption and diarrhea B. Plasmid-mediated, heat-stable and/or heat-liable enterotoxins that stimulate hypersecretion of fluids and electrolytes C. Mediated by cytotoxic Shiga toxins (STx-1, STx-2), which disrupt protein synthesis. D. Plasmid-mediated invasion and destruction of epithelial cells lining colon