The correct answer is option b. phosphorylcholine.
Explanation:
Endocytosis of Streptococcus pneumoniae by different body cells is triggered by the Phosphorylcholine. Phosphoorylcholine is an antigenic cell-surface component present on many pathogenic bacteria and commensals such as Streptococcus pneumoniae.
The autoantibodies that present in the bodies are due to phosphorylcholine that is created by CD8+ and B cells.
Thus, the correct answer is option b. phosphorylcholine
Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.
