Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens.

Fact 2: Antibody production is triggered by antigens.

Given the two facts above, answer the question "Antigens produce large, Y-shaped what?" with the following options: 
- Allergies
 - epidermal
 - deltas
 - bioaerosols
 - Joules
 - parasites
 - proteins
 - PDAs


 

       proteins  