A<unk>  is a kind of<unk><unk>  test (to test for the effectiveness of an antimicrobial agent a<unk>  infused with it is placed on a cultivated agar dish of bacteria to see if the antimicrobial agent in the<unk>  inhibits further growth of the bacteria.) The<unk> -disc synergy test (DDST) utilizes two of these<unk> s on the cultivated agar solution, either infused with a different antimicrobial solution. This test was recommended the standard by the Clinical and Laboratory Standards Institute in 2004 for its use against MRSA. To test for clindamycin resistance certain strains of Staphylococcus aureus bacteria with natural resistance to erythromycin are chosen for cultivation on the gel. The two antimicrobial<unk> s contain erythromycin and clindamycin and are placed about 20 mm apart. This is called a D-zone test, or D test. If a 'D' shape is formed around the clindamycin<unk>  then the isolate is reported as resistant to clindamycin. This occurs due to erythromycin inducing the bacteria's ERM (B) gene, and thus making it resistant to Clindamycin.
Double-disk diffusion test
Mouse ear swelling test
Broth microdilution
Direct agglutination test
Direct fluorescent antibody
Virtual colony count
Fluorescent treponemal antibody absorption test
Leishman stain