Examlex
Which of the following is not true currently?
Simple Columnar Cells
A single layer of tall, closely packed cells, lining some sections of the gastrointestinal tract and other areas, involved in absorption and secretion.
Red Blood Cells
The cells in the blood that carry oxygen from the lungs to the body tissues and carbon dioxide back to the lungs.
White Blood Cells
Cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
Mucin
A protein component of mucus, which helps to protect and lubricate surfaces.
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