MODEL OF HYDRA 6003061

A longitudinal section showing detailed structure of the body wall, nematocysts, hypostome, mouth, tentacles and gastro vascular cavity. Also showing the testes, ovary and a portion of tentacle in T.S. An accurate and three dimensional model mounted on stand, with key card. Overall dimensions 370 x 235 x 580 mm.approx.

MODEL OF R.N.A. 6003076

(Ribonucleic acid) Model showing R.N.A. molecule, D.N.A. Template molecule of chromosome, role of messenger and transfer R.N.A. colour key and structural formula. The complete model arranged on board, fully labelled. Overall dimensions 610 x 455 x 65 mm.approx.