Figure 5

Light micrographs of Ostreopsis lenticularis strain C202 showing the cell shape and general features. (A,B) Same drop-shaped cell in different focal layers. Note nucleus (n), pusule (p) and ventral opening (arrow). (C,D) Same broadly oval to ovoid cell in different focal layers. Note the ventral opening (arrow) in C and the nucleus (n) and two pusules (p) in (D). (E) A relatively round cell with pusule (p). Scale bars = 10 µm.