Medical Research Council - London Institute of Medical Sciences

In 2017 we celebrated five years of bringing you beautiful imagery from biomedical science

Unwanted Visitor
23 October 2012

Unwanted Visitor

Parasites, in all their forms, artfully exploit their unwitting host. Protozoan parasites, like malaria-causing Plasmodium, have evolved clever ways to hoodwink their host. Theileria is similar to Plasmodium but infects cattle and is spread by ticks rather than mosquitoes. Here, a white blood cell infected with Theileria (labelled green) is dividing into two daughter cells and the parasite has adopted a cunning disguise to get itself copied in the process. By covering itself in one of the host’s own proteins Theileria is pulled to opposite ends of the cell by the spindle (stained red) along with the dividing host DNA (stained blue). When the daughter cells split both will be infected and the parasite quickly spreads throughout the blood in this way. Scientists hope that understanding exactly how these tiny tricksters operate will inspire new ways to stop them.

Written by Emma Stoye

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BPoD stands for Biomedical Picture of the Day. Managed by the MRC London Institute of Medical Sciences the website aims to engage everyone, young and old, in the wonders of biomedicine. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

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