This invention was made in the course of research supported by the National Institutes of Health. The Government may have certain rights in this invention.
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4304865 | O'Brien et al. | Dec 1981 | |
4894343 | Tanaka et al. | Jan 1990 | |
5157024 | Gordon | Oct 1992 |
Number | Date | Country |
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2522014 | Aug 1983 | FRX |
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