title: Dependence of the activity of an influenza virus neuraminidase upon Ca2+.
mesh_terms: D000510:Alpha-Globulins / Q000378:metabolism; D002118:Calcium / Q000494:pharmacology*; D002499:Centrifugation, Density Gradient; D004355:Drug Stability; D006358:Hot Temperature; D008274:Magnesium / Q000494:pharmacology; D009439:Neuraminidase / Q000378:metabolism*; D009975:Orthomyxoviridae / Q000201:enzymology* / Q000302:isolation & purification; D013045:Species Specificity; D013395:Sucrose; D014776:Virus Cultivation
chemical_list: D000510:Alpha-Globulins; D013395:Sucrose; D009439:Neuraminidase; D008274:Magnesium; D002118:Calcium