What are antibodies physical barriers non specfic defense mechanisms spacific defense mechanisms

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

All eukaryotic cells contain small bodies called

Interferons play a vital role in the immune system why are interferons so important?