Tryptophan is also a precursor to the neurotransmitter serotonin, the hormone melatonin and vitamin B3.
Tryptophan is also a precursor to the neurotransmitters serotonin and melatonin.
Tryptophan is also a precursor to the neurotransmitters serotonin and melatonin.
Make the sentence simple: Tryptophan is also a precursor to the neurotransmitter serotonin, the hormone melatonin and vitamin B3. Output: