Two-photon excitation microscopy of mouse intestine. Red: actin. Green: cell nuclei. Blue: mucus of goblet cells. Obtained at 780 nm using a Ti-sapphire laser.
(Source: biomedical-engineering-online.com)
Nudibranch
(Source: neuroanthropology.files.wordpress.com)
Acrocirrus validus & Swima sp.
(Source: accessscience.com)
Acetabularia - gigantic single cell algae.
(Source: paleopolis.rediris.es)
