A form of autoimmune hemolytic anemia that occurs at standard body temperatures is differentiated from an agglutinin disease that occurs in this sort of environment. For 10 points each:
[10e] Name this environment, which precipitates immunoglobulins in a medical condition often associated with hepatitis C infection. Laboratory samples can be preserved in this kind of environment using liquid nitrogen.
ANSWER: cold temperature [or freezing or frozen; accept low temperatures; accept cold agglutinin disease; accept answers indicating temperature less than 37°C or less than core body temperature] (The first sentence after the lead-in refers to (mixed) cryoglobulinemia.)
[10m] Cold agglutinin disease can occur secondary to infection by a member of this genus that causes atypical pneumonia. Infections by bacteria in this genus, including its species genitalium, are difficult to treat since bacteria in it lack cell walls.
ANSWER: Mycoplasma [accept Mycoplasma pneumoniae or Mycoplasma genitalium; reject “Mycobacterium”]
[10h] Cold agglutinin disease can result in cold-provoked symptoms like this phenomenon, in which restricted blood flow causes the fingers to turn purple. The R in CREST syndrome, a form of scleroderma, is for this phenomenon.
ANSWER: Raynaud’s (RAY-nose) phenomenon [or Raynaud’s disease; or Raynaud’s syndrome]
<Yang, Biology>