TY - GEN AU - KUNST,H TI - Effect of swine influenza virus on a sulphonphthalein dye SN - 0028-0836 PY - 2004///0215 KW - Coloring Agents KW - Humans KW - Influenza A Virus, H1N1 Subtype KW - Orthomyxoviridae N1 - Publication Type: Journal Article UR - https://doi.org/10.1038/167368a0 ER -