Which choice is not a type of fiber mesh used in tissue engineering?

In tissue engineering, fiber meshes are crucial for providing structural support and facilitating cell growth. The types of fiber meshes commonly utilized include knitted, braided, and woven forms. Each of these formats has unique properties that enable them to be tailored for specific applications in scaffolding for tissue regeneration.

Knitted meshes are made by interlocking loops of filament, offering flexibility and elasticity, which can be advantageous in dynamic environments like muscle or skin regeneration. Braided meshes involve intertwining strands to create a structure that is strong yet allows for some degree of stretch, making them suitable for applications in vascular tissue engineering. Woven meshes are produced by interlacing fibers in specific patterns to create a dense, supportive scaffold that can also serve as a barrier to guide tissue regeneration.

On the other hand, flat does not represent a traditional category of fiber mesh. While flat structures may be used in certain applications, they do not encapsulate the dynamic properties and structural benefits that knitted, braided, or woven forms provide in the context of tissue engineering. Thus, flat is recognized as not fitting within the established types of fiber mesh used in the field.