A Comparison of the Immunostimulatory Effects of Polysaccharides from Tetraploid and Diploid Echinacea purpurea

Figure 1

Chromosome numbers of tetraploid and diploid E. purpurea: (a) chromosomes in tip cells of diploid E. purpurea (2x = 22); (b) chromosomes in tip cells of tetraploid E. purpurea (4x = 44).

(a)

(b)