Surgery on living animals; medical research that involves cutting into animals to study organs, parts, or diseases.

to bring back to life after it declined in condition or popularity; to breathe new life into something

"as big as life"; brightly colored; daring

to bring back to life again

full of life; fun; lively; animated

the ability to continue living

a tablet of substances that are thought to promote a healthy life

a person who lives through a difficult event or experience

quality or state of being full of life; state of being full of energy

necessary or essential to life