The answer might be 3 bases,a codon
The microbe 'Virus' causes HIV.
The Epithalamus partially forms the posterior roof of the diencephalon and covers the third ventricle.
- The Epithalamus function is to link the limbic system to other areas of the brain.
- The pineal gland is located in the epithalamus, a small region of the diencephalon.
- The functions of Epithalamus includes secretion of Melatonin by pineal gland which is a part of Epithalamus.
- Melatonin is also known as enzyme of darkness.
- It regulates sleep, circadian rhythms, metabolism and also increases immunity.
Thus, from the above points we can conclude that the Epithalamus forms a portion of the diencephalon's posterior roof and covers the third ventricle.
Learn more about Epithalamus here:
brainly.com/question/13021539
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