Which of the following statements is true about innate immunity?

[Joyce]

#january2020usmle2k

Which of the following statements is true about innate immunity?

A- Highly specific and refined over time
B- Its main components are T cells, B cells and circulating antibodies
C- Its main secreted proteins are immunoglobulins
D- Resistance persists through generations

 

[Tiffany Wong]

B- Its main components are T cells, B cells and circulating antibodies