See if you can find the 8 differences in each set of images.
Fuzzy mediators
Scanning electron micrograph of two innate immune cells, called macrophages, on a scaffold made of lyophilized Type 1 collagen, cross-linked with liquid formaldehyde. Macrophage protrusion is visualized reaching for another part of the collagen scaffold.
Claire E. Witherel, Drexel University, USA.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20181115084955554-0922:S0883769418002531:S0883769418002531_figu1g.jpeg?pub-status=live)
Floral clothes at the nanoscale
Colored scanning electron microscope image obtained from molybdenum sulfide nanosheets grown on carbonized bacterial cellulose nanofibers.
Md Nadim Ferdous Hoque, Texas Tech University, USA.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20181115084955554-0922:S0883769418002531:S0883769418002531_figu2g.jpeg?pub-status=live)
AUGUST 2018 answer key
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20181115084955554-0922:S0883769418002531:S0883769418002531_figu3g.jpeg?pub-status=live)
Answers will be published in the December 2018 issue.