These effector cells release antibodies.

This complement protein is cleaved to become activated to cleave C4 in the classical pathway of complement activation.

_________________________ is an example of an opsonin.

To separate helper T cells from other immune cells using flow cytometry, which approach would be best.

The inflammasome activates a caspase that cleaves the inactive forms of this cytokine.

Natural killer cells originate from these progenitors.

The alternative pathway of complement activation begins when ________.

All immune cells originate from this type of stem cell.

Which of the following complement proteins would be involved in neutralizing viruses using antibodies?

If a stem cell no longer make the transcription factor Notch, the stem cells cannot develop into ____________________.