Examlex
Multiple sclerosis is an autoimmune disease in which the body's defense system erroneously attacks the myelin sheath surrounding myelinated nerve fibers.
Parenchyma
The functional tissues in an organ or plant, made up of cells that perform the specific function of that organ or structure.
Sieve-Tube Member
A type of elongated cell in the phloem of flowering plants, responsible for the transport of nutrients, particularly sucrose, throughout the plant.
Cuticle
In plants, a waxy layer covering the epidermis of plants, that protects the plant against water loss and disease-causing organisms. In animals, an outer covering that protects and supports the organism.
Phloem
The vascular tissue in plants that transports sugars and other metabolic products from leaves to other parts of the plant.
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