Marjorie Giffen MacFarlane (1904–1973) was a British physiologist and biochemist known for her research into anaerobic infection.
[2] MacFarlane then joined the staff of the Lister Institute of Preventative Medicine.
She served as secretary of the Anaerobic Wound Infections sub-committee there and was a prolific researcher and publisher of scientific articles, including discovering and characterising several toxins for the first time.
[6][7] This was the first time it had been demonstrated that a toxin could attack cell membranes in this way, and opened up the possibility of developing an anti-toxin to combat this bacterium, which had been one of the main causes of gas gangrene in World War I.
[8] Along with her colleagues Harriette Chick and Margaret Hume, she published a history of the Lister Institute in 1971.