Image of the Day: Microscopic Creatures
Image of the Day: Microscopic Creatures
View the top three winners of this year’s Nikon Small World in Motion Competition.
Image of the Day: Microscopic Creatures
Image of the Day: Microscopic Creatures

View the top three winners of this year’s Nikon Small World in Motion Competition.

View the top three winners of this year’s Nikon Small World in Motion Competition.

protozoans
Single-Celled Organism Appears to Make Decisions
Single-Celled Organism Appears to Make Decisions
Ruth Williams | Dec 5, 2019
The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.
Protozoans Found With No Dedicated Stop Codons
Protozoans Found With No Dedicated Stop Codons
Karen Zusi | Oct 1, 2016
Some ciliates use the same trio of nucleotides to code for an amino acid and to stop translation.
Ciliates Are Genetic-Code Deviants
Ciliates Are Genetic-Code Deviants
Karen Zusi | Sep 30, 2016
Traditional stop codons have a double meaning in the protozoans' mRNA, sometimes calling for an amino acid during translation.
Traditional Medicine for Leishmaniasis
Traditional Medicine for Leishmaniasis
Kerry Grens | Sep 14, 2015
A plant used in traditional Mayan remedies to cure the parasitic infection produces a potent compound.
Shuffling Through Seven Sexes
Shuffling Through Seven Sexes
Dan Cossins | Mar 28, 2013
Researchers show that random rearrangement of DNA determines which of seven possible mating types the offspring of a single-celled microbe will be.
Epigenetic Enigmas
Epigenetic Enigmas
Beth Marie Mole | Oct 16, 2012
Overturning previous studies, a peculiar protozoan mysteriously uses a DNA-markup system to take out the genetic trash.   
The Salinella salve Mystery
Hayley Dunning | Oct 1, 2012
Salinella salve, an organism described as a single layer of cells, ciliated on both inner and outer surfaces and surrounding…
Gone Missing, circa 1892
Hayley Dunning | Oct 1, 2012
A unique organism sighted only once, more than a century ago, could shed light on the evolution of multicellularity—if it ever actually existed.