Renal agenesis. Renal agenesis is a medical condition in which one (unilateral) or both (bilateral) fetal kidneys fail to develop.
Polycrystalline cells are composed of multiple silicon crystals, which is a cheaper way to manufacture solar modules. Put simply, these cells are easier for a factory to produce, so they are less expensive. Polycrystalline cells are made by several methods, but most commonly with a cast of molten silicon.
MicroCrystalline Wax. This light yellow, petroleum-based wax is used for paper coating, as a parting compound (encapsulating electronic components), and as a sealant. Micro Crystalline Wax is low in odor and has a soft, sticky feel. This material is priced and sold by the 10 pound billet. An order of 1 will give you 10 pounds of material.