1951 in biotechnology

thumb| Scanning electron micrograph of an Apoptosis|apoptotic HeLa cell. Zeiss Merlin HR-SEM. thumb|Multiphoton fluorescence image of cultured HeLa cells with a fluorescent protein targeted to the Golgi apparatus (orange), microtubules (green) and counterstained for DNA (cyan). Nikon RTS2000MP custom laser scanning microscope. thumb|Immunofluorescence image of HeLa cells grown in tissue culture and stained with antibody to [[actin in green, vimentin in red and DNA in blue]] thumb|Immunofluorescence of HeLa cells showing [[microtubules in green, mitochondria in yellow, nucleoli in red and nucle