41. In some proteobacteria and dinoflagellates , enzymes consisting of only large subunits have been found. 42. The dinoflagellates then eat the blood and flakes of tissue while the affected fish die. 43. Over twenty dinoflagellate species have been reported to be infected by some strain of Amoebophyra. 44. "' Dinoxanthin "'is a type of xanthophyll found in dinoflagellates . 45. These same dinoflagellates were first defined by Otto B�tschli in 1885 as the flagellate order Dinoflagellida. 46. The main source for identification of freshwater dinoflagellates is the " S�sswasser Flora ". 47. One of their most striking features is the large amount of cellular DNA that dinoflagellates contain. 48. All dinoflagellates contain red algal plastids or remnant ( nonphotosynthetic ) organelles of red algal origin. 49. The Apicomplexa and dinoflagellates may be more closely related to each other than to the ciliates. 50. Marine dinoflagellate species are often toxic, but freshwater species are not known to be toxic.
