| Answer | Crossword Clue |
|---|---|
| SERA | Immunizing agents. |
| SERA | Immunizing agents |
| SERUMS | Immunizing antitoxins. |
| SERUMS | Immunizing fluids. |
| SERUM | Immunizing agent. |
| SERUM | Immunizing fluid |
| ANTISERA | Immunizing liquids |
| SERA | Immunizing fluids |
| immunization | the act of immunizing also IMMUNISATION |
| immunizations | IMMUNIZATION, the act of immunizing also IMMUNISATION |
| boosters | A dose of an immunizing agent increasing or renewing the effect of an earlier one |
