Which of the following is a powerful substance released after the activation of the complement system that will attract leukocytes and macrophages to the site?

The main barrier to prevent invasion by foreign particles is:

Please select the details of the humoral immune response in the proper sequence.

Which of the following will have a greater binding strength, IgM or IgG?

IgE can be referred to as a reagenic antibody.

The IgA molecule occurs as in secretions a dimer when connected by the j-chain and when it contains a secretory protein molecule which makes it more resistant to enzyme attacks.

Which of the following is classified as an antibody that can bind Mast cells?

Anticoagulants that bind calcium inactivate complement.

Which of the following is true about Kappa and Lambda light chains?

Select all that are true when the APCs encounter an exogenous antigen?