In order of presentation:
CDC/ V. McPheeters.
This photomicrograph of a Ziehl-Neelsen-stained specimen, revealed the presence of magenta stained, rod-shaped, acid-fast, Mycobacterium tuberculosis bacilli. PHIL. Creation Date: 1965. Copyright Restrictions: None - This image is in the public domain. Accessed March 29, 2022.
https://phil.cdc.gov/Details.aspx?pid=23000CDC.
Administering the TST. Slide #23 from Targeted Tuberculosis (TB) Testing and Treatment of Latent TB Infection – Download complete slide set - the slide set is in the public domain. Centers for Disease Control and Prevention site. September 2016. Accessed March 29, 2022.
https://www.cdc.gov/tb/publications/slidesets/ltbi/default.htmCDC.
Reading the TST. Slide #24 from Targeted Tuberculosis (TB) Testing and Treatment of Latent TB Infection – Download complete slide set- the slide set is in the public domain. Centers for Disease Control and Prevention site. September 2016. Accessed March 29, 2022.
https://www.cdc.gov/tb/publications/slidesets/ltbi/default.htmCDC.
Two-step TST Testing. Slide #37 from Targeted Tuberculosis (TB) Testing and Treatment of Latent TB Infection – Download complete slide set. Centers for Disease Control and Prevention site - the slide set is in the public domain. September 2016. Accessed March 29, 2022.
https://www.cdc.gov/tb/publications/slidesets/ltbi/default.htmCDC.
Interferon-gamma release assays (IGRAs). Slide #39 from Targeted Tuberculosis (TB) Testing and Treatment of Latent TB Infection – Download complete slide set- the slide set is in the public domain. Centers for Disease Control and Prevention site. September 2016. Accessed March 29, 2022.
https://www.cdc.gov/tb/publications/slidesets/ltbi/default.htmCDC.
Evaluation of Persons with Positive TB Test Results. Slide #51 from Targeted Tuberculosis (TB) Testing and Treatment of Latent TB Infection – Download complete slide set - the slide set is in the public domain. Centers for Disease Control and Prevention site. September 2016. Accessed March 29, 2022.
https://www.cdc.gov/tb/publications/slidesets/ltbi/default.htm