Cheng, Thomas C.Yee, Herbert W.F.Rifkin, Erik2009-03-092009-03-091968-07Cheng TC, Yee HWF, Rifkin E. 1968. Studies on the internal defense mechanisms of sponges: I. The cell types occurring in the mesoglea of Terpios zeteki (de Laubenfels) (Porifera: Demospongiae). Pac Sci 22(3): 395-401.0030-8870http://hdl.handle.net/10125/7129en-USStudies on the Internal Defense Mechanisms of Sponges: I. The Cell Types Occurring in the Mesoglea of Terpios zeteki (de Laubenfels) (Porifera: Demospongiae)Article