Fill up the blanks -
A. In malaria, the rupture of ______ release a toxic substance called ______ which is responsible for the chill and recurring fever.
B. _____ results in blockage of the intestinal passage. A healthy person acquires this through contaminated water, vegetables, fruits etc.
C. T-lymphocytes mediate ______ immunity and B-lymphocytes mediate ____ immunity.
D. Genes in normal cells which when activated under certain conditions can cause cancerous transformation, are called ______.
E. Smoking increases _____ content in blood and reduces the concentration of haembound oxygen. This causes oxygen deficiency in the body.
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