Extraction of ragweed pollen with water organic soluble solvents. II. Chemical studies with pyridine and its relationship to alum-pyridine precipitated complex.
D000535:Aluminum; D001252:Astringents; D011232:Chemical Precipitation; D007202:Indicators and Reagents; D008722:Methods; D009584:Nitrogen / Q000032:analysis; D011058:Pollen / Q000302:isolation & purification*; D011725:Pyridines; D012997:Solvents; D013431:Sulfates
D001252:Astringents; D007202:Indicators and Reagents; D011725:Pyridines; D012997:Solvents; D013431:Sulfates; D000535:Aluminum; D009584:Nitrogen