References |
Ref.774 : Antonio Selva et al., “Ceratozamiaxanthin: A Novel Keto-Carotenoid from Young Leaves of Two Cycads” Ref.222 : Cardini, Franco; Pucci, Susanna; Calamassi, Roberto, Journal of Plant Physiology (2006), 163(2), 128-140., "Quantitative variations of individual carotenoids in relationship with the leaflet development of six species of the genus Ceratozamia (Cycads)"
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