In Situation 25.1, fecal samples were found to be negative when cultured. The next step in diagnosing the cause of illness would be
A) to begin antibiotic therapy.
B) blood cultures.
C) microscopic examination of feces for oocysts.
D) microscopic examination of feces for viruses.
E) muscle biopsy.
C
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Some species of Streptococcus, when grown on blood agar, produce a complete hemolysis with the formation of a clear zone around the colony; this is referred to as ________.
A. gamma-hemolysis B. alpha-hemolysis C. beta-hemolysis D. None of the choices are correct.
Figure 36.6
Use the figure above to answer the following question.
?
The anatomical structure identified with the letter "R" in the figure above is the ____.
A. pericardium B. cardiac muscle C. inferior vena cava D. right atrium E. heart apex
In a commensal relationship, the commensal benefits but the cohabitant is neither harmed nor benefited.
Answer the following statement true (T) or false (F)
Lichens are a symbiotic relationship between which of the following?
a) a fungus and a liverwort b) a fungus and a moss c) two species of algae d) a fungus and algae e) two species of fungi