(2A) Agarose gel electrophoresis of PCR products from amplification experiments with Juniperus pollen DNA tested with species-specific J. ashei primers (asheimatKF1 and asheimatKR1). Lane 1: Juniperus ashei pollen DNA, Lane 2: Juniperus pinchotii pollen DNA, Lane 3: Juniperus virginiana pollen DNA, Lane 4: Blank, Lane 5: Negative control, Lane 6: λ-DNA ladder (HindIII) as marker (M). (2B) Agarose gel electrophoresis of PCR products obtained from the DNA extracted from the Buck bio-slide sampler from Canada on 15 January 2014 and tested with the primers asheimatKF1 and asheimatKR1. Lane 1: Blank (No DNA), Lane 2: Juniperus ashei pollen DNA obtained from Canada slide on 15 January 2014, Lane 3: Blank (No DNA), Lane 4: Positive control, Lane 5: Negative control (only milliQ water and no DNA), Lane 6–7: Blank (No DNA), Lane 8: exACTGene™ mid- range (300-5000bp) DNA Ladder.