Fig. 3From: Efficient transformation of the isolated microspores of Chinese cabbage (Brassica rapa L. ssp. pekinensis) by particle bombardmentViability of microspores after particle bombardment (72 h) observed using a microscope at 20 ×. a The viability of microspores under bombardment parameters of 4 times—1100 psi—3 cm. b The viability of microspores under bombardment parameters 4 times—1100 psi—6 cm. c The viability of microspores with bombardment parameters of 4 times—1100 psi—9 cm. d The viability of microspores that were not bombarded. Living microspores are indicated by the arrow in the figure. The scale bar is 20 μmBack to article page