The San Francisco 49ers logo was printed on two plates: one using colored yeast (black, white and yellow) and again using red fluorescent yeast.
Printed by Jasmine Temple.
San Francisco 49ers logo printed with colored yeast.
San Francisco 49ers logo printed in red fluorescent yeast. Original image from BioRad imager.
San Francisco 49ers logo printed in fluorescent yeast. Original image put through ruby fluorescent filter.