Subject: Time:4:06 PM OFFICE MEMO Mouse IL-4 Date:12.13.93 Hi, I was wondering has anyone injected mouse IL-4 into a mouse to stimulate an immune response and if so, 1) at what concentration did you use it and secondly, 2) what route of injection did you use? I'd appreciate any ideas you may have. Thanks in advance. Donna Munoz-O'Regan dmoregan at genpharm.com