A couple questions about human immunity?
Do helper T cells always activate cytotoxic T and plasma B cells during an infection? Or is it just with a viral infection?
Are antibodies made against bacterial infections?
What is the difference between an antigen and a mitogen exactly?
Can macrophages and other phagocytic cells present viral antigens?
What cells do dendritic cells present antigens to? Does it vary?
Thanks for any help I get!