Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
External morphology of polyclad flatworms. Upper and lower panels represent specimens S1 and S2, respectively. Panel (A,B) dorsal views; Panel (C) anterior region indicated by the yellow dotted line from the direction of the yellow arrow in panel (B); Panel (D,E) ventral views. a and p represent anterior and posterior ends of the body, respectively. t, testis; o, ovary; T, tentacle; e, eye spots; i, intestine.
