Which type of cells educate T-cells self-recognition through positive selection?
A. Macrophages
B. Specialized epithelial cells
C. APCs
D. Dendritic cells
Ans: B. Specialized epithelial cells
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The white matter of the spinal cord is mainly
A) unmyelinated axons. B) neuroglia. C) Schwann cells. D) myelinated axons. E) nodes of Ranvier.
What is the percentage of dehydration that will cause an animal to die?
What will be an ideal response?
Amyotrophic lateral sclerosis is likely associated with the disruption of microtubules and microfilaments within motor neurons
Indicate whether the statement is true or false
Which of the following is not a feature that connective tissues have in common?
A. The presence of fibroblasts B. Very conspicuous fibers C. Ground substance with a gelatinous to rubbery consistency D. A calcified matrix E. The presence of collagen