Sickling of red blood cells can be produced in those with sickle-cell anemia by ________.
A) travel at high altitude
B) vigorous exercise
C) malaria and travel at high altitude
D) travel at high altitude and vigorous exercise
Answer: C
Sickling of red blood cells can be produced in those with sickle-cell anemia by ________.
A) travel at high altitude
B) vigorous exercise
C) malaria and travel at high altitude
D) travel at high altitude and vigorous exercise
Answer: C