Roggen D R, Raski D J, Jones N O
Science. 1966 Apr 22;152(3721):515-6. doi: 10.1126/science.152.3721.515.
Electron microscopic studies revealed thle presenlce of true cilia in nerve processes connected with sensory organs of a nemnatodes. These structures are important in evaluating the relation between nematodes and the other aschelminths, from which they were separated partially on the basis of the supposed total absence of cilia.
