False. They have an open <span>circulatory system</span>
Answer:
antigen-MHC protein complexes
Explanation:
Helper T-cells recognise antigens that are complexed with MHC proteins and interact with target cells. Antibodies can be produced against a single antigen in a variety of ways. Toxic shock syndrome is a relatively mild condition that resembles other minor allergy responses. Antigen-presenting cells break down superantigens.
(Hope this helps can i pls have brainlist (crown)☺️)
Hey! The answer is: Collect data using a prototype.
I have a screenshot attached as well.
I hope this helps you!
Good luck! :)
Eat worms from the ground