Shadowcast Transmission Electron Micrograph (TEM) of Cryptomonas (member Cryptophyta) algae, showing discharged trichocysts. Some cryptomonads have batteries of trichocysts just beneath the periplast; when irritated, the cell can discharge trichocysts singly or all together, propelling the cell away from the stimulus or predator; new trichocysts are then formed in the Golgi body. Magnification: 10,000X at 6.5 x 7".