B-3 INFECTION AND RESPONSE

1. scientific testing

1.1. placebo

1.2. 1: drugs are tested in labs on grown cells

1.2.1. 2:the drugs are tested on animals

1.2.1.1. 3:clinical trials on people

1.3. double blind test

1.4. growing microorganism

1.4.1. incubated at 25 degrees for safety in schools

1.4.2. chemical that kills microorganisms will leave a clear agar,bigger circle and better,better drug

1.4.3. agar plate,sterilised equipment with flaming, loop the liquid bacteria, spread evenly, open lid slightly

2. microorganisms

2.1. pathogens are more harmful microorganism