| CHO | Chinese hamster ovary |
| GPCR | G protein-coupled receptor |
| HA | Hemagglutinin |
| K191A | Lys191 mutant of H1 receptor to alanine |
| WT | Wild-type H1 receptor |
| CHO | Chinese hamster ovary |
| GPCR | G protein-coupled receptor |
| HA | Hemagglutinin |
| K191A | Lys191 mutant of H1 receptor to alanine |
| WT | Wild-type H1 receptor |