21. Once in the hemolymph, the sperm and ejaculatory fluids may act as antigens, triggering an immune reaction . 22. Episodic angioedema ( Calabar swellings ) in the arms and legs, caused by immune reactions are common. 23. The size of the circle indicates the strength of the body's immune reaction to the foreign invaders. 24. Chamomile causes the most severe reactions, occasionally including anaphylactic shock, a severe, often fatal systemic immune reaction . 25. About one-third of them showed an immune reaction , measured by their blood cells'production of the hormone interferon. 26. The reaction caused organic compounds to leech into the drug and those compounds incited an immune reaction . 27. Jesse Gelsinger died of a massive immune reaction to the cold virus used to deliver the gene. 28. By lowering the body's ability to mount an immune reaction , these medicines also increase the chances of infection. 29. To study the mystery, Dhabhar is examining the effects of psychological stress on immune reactions in the skin. 30. The disease is suspected to stem from an immune reaction to an unknown irritant made by the body.
