A 200X photomicrograph magnification of a direct fluorescent antibody (DFA) stained sample revealed the presence of rod… https://www.rawpixel.com/image/2288444/free-photo-image-bacteria-laboratoryFree Image from public domain licenseA 1000X photomicrograph magnification of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence… https://www.rawpixel.com/image/2288586/free-photo-image-biology-microscope-fluorescent-antibodyFree Image from public domain licenseA photomicrograph of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence of numerous… https://www.rawpixel.com/image/2288587/free-photo-image-antibody-awarenessFree Image from public domain license