A cell culture microcarrier includes a polymer formed from copolymerization of a mixture including an uncharged hydrophilic unsaturated monomer having a hydroxyl group; a hydrophilic carboxylic acid containing unsaturated monomer; and a hydrophilic multifunctional unsaturated monomer. The tab has a substantially \u2229-shaped perforated portion extending from the top rim of a wall side to the center of a top side and a turnover portion formed after pulling off the \u2229-shaped perforated portion. In the first wheel position the wheels are attached to the frame at opposite lateral sides of the cart and in this position the center of mass of a load carried on the bed of the cart is relatively low. 50% by weight, Mn in an amount ranging from 0. In a first embodiment, the method comprises providing a packaging vessel, placing crab meat into the vessel, adjusting the volume of air within the vessel to obtain an air to meat ratio of essentially 20 percent by volume, sealing the packaging vessel, and then pasteurizing the sealed vessel to achieve desired end results. When starting the motor vehicle, the pump is started to pump the oil to the hydraulic cylinders to extend out the bumper, and then the decompression valve and the relief valve are opened to zero the pressure after the bumper had been extended out.