assignment whereas, professor fengping shan ph. d., of no. 92 north second road, department of immunology, china medical university, shenyang, liaoning china 110001 ( hereinafter assignor ), is the owner of the entire right, title and interest in and to the following listed patents and / or patent applications ( hereinafter patents ) in china by previous assignments ; 1 ) 合 治 、 的 cn 200710158742. 7 met - enkephalin, its application in in treating leukemia and other blood cancers ; 2 ) 人 中 的 cn 200710051586. 4 met - enkephalin, its application in preparation of human and animal vaccine ; 3 ) 有 的 cn 200610046249. 1 a nasal spray formulation containing met enkephalin ; 4 ) 曲 合 中 的, cn 201210290150. 1 low dose naltrexone, combined with menk, its application in preparation of anticancer drug ; 5 ) 曲 合 的 cn 201210302259. 2 low dose naltrexone, combined with menk, its application in preparation of leukophoresis for anticancer ; 6 ) 合 治 、 的 cn 200810229085. 5 conpound met - enkephalin as a drug for colon cancer and pancreatic cancer using a method of by isolating and enriching a patient's own immune cells and following an enriching external incubation are transfused back into the patient thereby providing the patient with a passive immunity containing large amounts of auto - amplified immune cells that combat cancer cells. ; 7 ) 合 治 的 cn 200910011030. 1 naltrexone 7 )