Scanning electron microscopic observation of the in vitro cultured protozoan, Perkinsus olseni, isolated from the Manila clam, Ruditapes philippinarum

Table 1 Transformation rate and dimensions of P. olseni trophozoites during transformation in the culture medium

Days after zoospores were released to the medium	Transformation rate (%)	Size (μm) ± SD	N
3	3	4.8 ± 1.2	40
5	6	8.0 ± 3.2	100
7	29	11.4 ± 4.9	100
9	36	15.3 ± 7.1	100
12	66	21.2 ± 9.2	100
15	87	31.5 ± 15.5	100

ISSN: 1471-2180