Fig. 1From: Improving large-scale biomass and total alkaloid production of Dendrobium nobile Lindl. using a temporary immersion bioreactor system and MeJA elicitationEffect of immersion frequency in TIBS on growth of D. nobile for 80 days. A–d temporary immersion for 5 min every 2 h, every 4 h, every 6 h, and every 8 h respectively. Scale bar = 2 cmBack to article page