Vitrification of samples in PPC #1 and PS either without (i.e., in a conventional water bath) and with magnetic induction heating (MIH) for warming. A) Schematic illustration of the procedures for vitrifying samples with PPC #1 either without or with MIH: (a) loading sample into PPC #1, (b) cooling the sample in liquid nitrogen, (c) warming the sample in a 37 oC water bath, (d) the non-uniform nature of convective heating in a water bath; (e) magnetic NPs-mediated MIH; and (f) the uniform global and local heating of MIH. B) Images taken during the cooling-warming processes using a plastic straw and PPC #1: (a) conventional heating in 37 °C of water, and (b) NP-mediated MIH.