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	1.	Initial proliferation of cortical cells in the formation of root nodules in Pisum sativum L. [electronic resource] by Libbenga, K R Harkes, P A Producer: 20140127 In: Planta vol. 114 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Auxin-binding by particulate fractions from tobacco leaf protoplasts. [electronic resource] by Vreugdenhil, D Harkes, P A Libbenga, K R Producer: 20131206 In: Planta vol. 150 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	A biotechnological production process for cinchona alkaloids: prospects and problems. [electronic resource] by Verpoorte, R Harkes, P A ten Hoopen, H J Producer: 19880202 In: Acta Leidensia vol. 55 Availability: No items available. Save to lists Add to cart (remove)
	4.	Modulation of the number of membrane-bound auxin-binding sites during the growth of batch-cultured tobacco cells. [electronic resource] by Vreugdenhil, D Burgers, A Harkes, P A Libbenga, K R Producer: 20131205 In: Planta vol. 152 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Effect of auxin on cytodifferentiation and production of quinoline alkaloids in compact globular structures of Cinchona ledgeriana. [electronic resource] by Hoekstra, S S Harkes, P A Verpoorte, R Libbenga, K R Producer: 20131118 In: Plant cell reports vol. 8 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Correlation between the presence of membrane-bound auxin binding and root regeneration in cultured tobacco cells. [electronic resource] by Maan, A C van der Linde, P C Harkes, P A Libbenga, K R Producer: 20131122 In: Planta vol. 164 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Characterization of a Suspension Culture of Tabernaemontana elegans on Growth, Nutrient Uptake, and Accumulation of Indole Alkaloids*. [electronic resource] by van der Heijden, R Louwe, C L Verhey, E R Harkes, P A Verpoorte, R Producer: 20121002 In: Planta medica vol. 55 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Anthraquinones as phytoalexins in cell and tissue cultures of Cinchona spec. [electronic resource] by Wijnsma, R Go, J T van Weerden, I N Harkes, P A Verpoorte, R Baerheim Svendsen, A Producer: 20131125 In: Plant cell reports vol. 4 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Induction of triterpene biosynthesis by elicitors in suspension cultures of Tabernaemontana species. [electronic resource] by van der Heijden, R Verheij, E R Schripsema, J Svendsen, A B Verpoorte, R Harkes, P A Producer: 20131119 In: Plant cell reports vol. 7 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Indole alkaloids from Tabernaemontana elegans. [electronic resource] by van der Heijden, R Brouwer, R L Verpoorte, R van Beek, T A Harkes, P A Baerheim Svendsen, A Producer: 19860728 In: Planta medica no. 2 Availability: No items available. Save to lists Add to cart (remove)
	11.	Accumulation of indole alkaloids in a suspension culture of Tabernaemontana divaricata. [electronic resource] by van der Heijden, R Hermans-Lokkerbol, A de Kool, L P Lamping, P J Harkes, P A Verpoorte, R Producer: 20091124 In: Planta medica vol. 54 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	A method for the quantitative determination of anthraquinones and alkaloids in cell and tissue cultures of cinchona sp. [electronic resource] by Wijnsma, R van Vliet, T B Harkes, P A van Groningen, H J van der Heijden, R Verpoorte, R Svendsen, A B Producer: 20130704 In: Planta medica vol. 53 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)