Architect: E. L. Masqueray - Cheif of Design for the Louisiana Purchase Exposition Company, St. Louis Builder: Caldwell & Drake, St. Louis. Considered the largest building on the Fairgrounds, the Palace of Agriculture was a testament to former President Thomas Jeffersonâs dream of an agrarian society. The building, constructed at a cost of $525,491, stretched over twenty-three acres and exhibited agriculture products from fifteen countries and forty-two states.
Keratinocytes are the most important of the epidermal cells because? they produce a fibrous protein that gives the skin its protective  properties.n epidermal cell is a cell that is part of the outer layer of an organism. For example, in humans, skin cells are epidermal. Leaves on plants have epidermal layers on the to â¦ p and bottom of the leaf.
Its two main layers are the epidermis (outer layer) and dermis (inner layer). The epidermis has several strata (layers) that contain four cell types. Keratinocytes produce keratin, a protein that gives skin its strength and flexibility and waterproofs the skin surface.