title: Parainfluenza 2 virus: increase in hemagglutinin titer on treatment with Tween-80 and ether.
mesh_terms: D000906:Antibodies; D004987:Ethers / Q000494:pharmacology*; D006384:Hemagglutination; D066298:In Vitro Techniques; D018108:Respirovirus / Q000187:drug effects* / Q000302:isolation & purification*; D013501:Surface-Active Agents / Q000494:pharmacology*
chemical_list: D000906:Antibodies; D004987:Ethers; D013501:Surface-Active Agents