Associations to the word «Tetrapyrrole»

Wiktionary

TETRAPYRROLE, noun. (biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit

Wise words

Occasionally in life there are those moments of unutterable fulfillment which cannot be completely explained by those symbols called words. Their meanings can only be articulated by the inaudible language of the heart.
Martin Luther King Jr.