Antares has indicated that it will price Otrexup at a price of $548 per prescription. Each prescription contains four weekly injectors. This has cost implications as the biologics can cost $15,000 to $25,000 per year versus about $6,600 for Otrexup.
Each of the three primary germ layers will form a different set of specific organs and tissue types in the animal. The ectoderm will form the nervous system, the epithelial cells of the mammary glands, the lens of the eyes, hair, pigment cells and the epidermis of the skin.hese three layers, the endoderm, the ectoderm and the mesoderm, are called the primary germ layers. After gastrulation, the cup-like embryonic stage that contains at least two distinct germ layers is called the gastrula.
Back to top. Skin: dermal layers. The dermis, called true skin,  is the layer beneath the epidermis. Its major parts are collagen (a protein that adds strength), reticular fibers (thin protein fibers that add support), and elastic fibers (a protein that adds flexibility).hen the cells reach the skin surface, they are sloughed off in a process called desquamation. The next layer, the stratum spinosum, consists of spiny prickle cells that interlock to support the skin. The stratum granulosum, the thin middle layer, initiates keratinization (production of keratin).