Ivan Pavlov quote ✍️

Quote

The digestive canal represents a tube passing through the entire organism and communicating with the external world, i.e. as it were the external surface of the body, but turned inwards and thus hidden in the organism.

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Poet’s word, with inverted comma, for the end of the day
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E
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E
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N
Hint 1 meaning
The old plural of Eye.
Hint 2 anagram
NEE
Hint 3 another clue
AND STILL ___
5 +1

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