Three dimensional model displaying cross section with nerve ending at an enlargement that allows clear demonstration in the classroom colored with stable dissolute colors, clearly illustrates the composition of the spianl cord.
Dorsal body paragraph and the canal dorsal and meningitis
Set on 7 models larger than the natural, size fixed on a panel. The panel can be hung on a wall. It shows the main formation stages of ovule and Embryo sac in angiosperms beginning with the ovule and its inner structure and ending with the linear division with the generation of 8 nuclei.
Set of 5 enlarged models fixed on a panel which can be hung on a wall represents the prime formation stages of pollen grains in angiosperms beginning from the pollen mother cell (diploid) to the tetrad of four separated haploid pollen cells, where each of them generate pollen tube nucleus and generative nucleus. And the wall of the grain duplicates forming and inner and outer pitted walls.