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Wild frost grape plants on eastern red cedar tree.
Wild frost grape plants—shown here growing on an eastern red cedar tree—contain a sap with many potential uses. (Steven Vaughn, D3525-1).
Cut frost grape stems with sap.
Cut frost grape stems with hardened sap. (Steven Vaughn, D3526-1).
Sap on a frost grape stem.
Sap on a debarked frost grape stem. (Steven Vaughn, D3527-1).
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