Examlex
Use the following to answer questions :
A teacher is going to assign each student a 3-digit code using the digits 0 through 3.
-How many codes are possible if repetitions are not allowed and the code must be less than 200 and divisible by 10?
Multiple Sclerosis
A chronic autoimmune disease affecting the central nervous system, leading to various neurological symptoms.
Myelin
A fatty substance that forms a sheath around the axons of many neurons, increasing the speed at which electrical impulses propagate along the nerve cells.
Glial Cells
Non-neuronal cells in the central and peripheral nervous systems that provide support and protection for neurons.
Myelin Sheath
A fatty insulation that may surround the axon of a neuron.
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