Which type of large intestine worm was primarily studied by Ivan Mackerie?
Mongolian death worm The Mongolian death worm (Mongolian: олгой-хорхой , olgoi-khorkhoi, "large intestine worm") is a creature
Kristaps Helmanis Kristaps Helmanis (German: "Christopher Hellmann" , Russian: Христофор Иванович Гельман ; 3 June 1848 – 2 March 1892) was a Latvian vaccinologist and microbiologist. He discovered tuberculin simultaneously with Robert Koch and mallein together with Oto Kalniņš (1891).