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Vape pens or e-liquid vaporizers provide a variety of benefits which include no harsh smell or tar as in traditional cigarette smoking

For cotinine, r values were 0.09 for the number of oocytes per OPU ( p = 0.09), 0.04 for the maturation rate ( p = 0.45), and 0.01 for the fertilisation rate ( p = 0.83)

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Other major components below the detection limit included acetic acid, acetone alcohol, dihydroxyacetone, etc., which can only be qualitatively identified by GCMS due to their low content

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Dimensions: 4730 x 7088 px | 40 x 60 cm | 15.8 x 23.6 inches | 300dpi Date taken: 2 July 2012 Photographer: OLAF VON LIERES More information: This image could have imperfections as its either historical or reportage.