Answer Happy

Which of the following are true about macrophages 1. Macrophages release TNF-a which causes angiogenesis in all tissues 2. IL1 can lead to the recruitment of macrophages 3. Macrophages are the most numerous cells to initially populate a site of injury 4. Monocytes can be recruited to sites of injury by chemotactic factors 5. Macrophages deposit fibrin stands in the lungs during pneumonia A
Which of the following are correct about the complement system: 1. The binding of Ci leads to the release of C3a, C3b, and C4a 2. C1 will bind to IgE, eventually triggering the release of vasoactive mediators 3. C5-9 make up the membrane attack complex 4. C3a is the component of the complement cascade that allows for recognition and phagocytosis of a microbe 5. Activation of either the classical or alternative pathway leads to the same final outcome