| SLA | Sulfated lactosyl archaeol (a glycolipid-based archaeosome adjuvant); |
| Ref. | Reference spike protein (ancestral strain SARS-CoV-2 spike); |
| CHO | Chinese hamster ovary (cell line used for protein expression); |
| SFCs | Spot-forming cells (in ELISpot assay); |
| HA | Hemagglutinin (influenza antigen); |
| HBsAg | Hepatitis B surface antigen; |
| HCV | Hepatitis C virus; |
| RHDV | Rabbit hemorrhagic disease virus; |
| SmCB | Schistosoma mansoni cathepsin B antigen. |