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Dr. Praveen Saxena poses for a portrait in the invitro conservation room in the Edmund C. Bovey building at the University of Guelph. Dr. Saxena is also holding a small clone of an American Elm tree.Philip Cheung/The Globe and Mail

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Dr. Praveen Saxena, 56, professor and director of the Gosling Research Institute for Plant Preservation, Department of Plant Agriculture of the University of Guelph, poses for a portrait beside the original American Elm tree which was cloned for the invitro technology at the University. Dr. Saxena is also holding a small clone of the tree.Philip Cheung/The Globe and Mail

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American Elm trees during plant propagation using invitro technology, in the invitro conservation room in the Edmund C. Bovey building at the University of Guelph.

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Dr. Praveen Saxena poses for a portrait in the invitro conservation room in the Edmund C. Bovey building at the University of Guelph. Dr. Saxena is also holding a small clone of an American Elm tree.Philip Cheung/The Globe and Mail

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Medicinal plants during plant propagation using invitro technology, in the invitro conservation room in the Edmund C. Bovey building at the University of Guelph.

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