Abstract
We investigated extracts of timothy grass pollen from four seasons (1989, 1990, 1991, and 1994) by protein content, SDS-PAGE, immunoblot, RAST, RAST inhibition, and crossed immunoelectrophoresis. Extract of the pollen from 1991 showed the lowest yield in quantitative assays. SDS-PAGE, crossed immunoelectrophoresis, RAST, and RAST inhibition expressed approximately comparable patterns for all extracts except that from 1991. Obviously, the quality of grass pollens, as shown for some ragweed (Ambrosia elatior) pollens depend on year of collection. Our findings are partially in agreement with some earlier examinations of the quality of timothy pollen from different pollen seasons.
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