Discharged extrusomes (mucocysts), methyl green pyronin-Y stain

Description:

Discharged extrusomes (mucocysts) of the nassulid ciliate, Furgasonia trichocystis (Stokes, 1894) Jankowski, 1964. Synonym: Cyclogramma. The spherical macronucleus (stained dark green here)and adjacent micronucleus are slightly posterior to the equator. There is a prominent layer of fusiform subpelicular extrusomes (mucocysts). This preparation demonstartes the discharged extrusomes and mucus surrounding the cell. Collected from a temporary rainwater pool with abundant decaying grass near Boise, Idaho. March, 2005. Methyl green Pyronin-Y stain (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield.