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The outermost, tough portion of a hair shaft is the

barry

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10 years ago

The outermost, tough portion of a hair shaft is the

The outermost, tough portion of a hair shaft is the
A) cortex.
B) cuticle.
C) medulla.
D) soft keratin.
E) external root sheath.

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Neji513

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barry Author

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10 years ago

Thanks.

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