MICROANATOMY

Detailed explanation-1: -Corneal avascularity-the absence of blood vessels in the cornea-is required for optical clarity and optimal vision, and has led to the cornea being widely used for validating pro-and anti-angiogenic therapeutic strategies for many disorders1-4.

Detailed explanation-2: -Epithelial tissue have cells which are tightly packed together, little matrix, and without blood vessels. This is in contrast to connective tissue, in which cells are not tightly packed together, are set in a matrix, and many of which have blood vessels within.

Detailed explanation-3: -Bone is a richly vascularized connective tissue. As the main source of oxygen, nutrients, hormones, neurotransmitters and growth factors delivered to the bone cells, vasculature is indispensable for appropriate bone development, regeneration and remodeling.