In the April 29 SN: Proton puzzles, venomous swimmers, seeking early signs of autism, maximum entanglement, cephalopod intelligence insights, glass frog mothering techniques, Einstein on TV, touchy tyrannosaurs, seeing cells in 3-D and more.
IT’S ELECTRIFYING Macrophages (green) “plug in” to heart cells (light purple and pink), providing an electrical boost that helps the heart cells contract and pump blood, a study in mice finds.
Ella Maru Studio
VARIATIONS ON A CELL Although these stem cells are all genetically identical, they can adopt a variety of shapes. Here, the cells’ membranes are cyan, and DNA is colored magenta.
Allen Institute for Cell Science
WEAPONS OF MASS EVOLUTION Bacteria and archaea armed with CRISPR systems have been at war with viruses for eons. Here, hordes of viruses known as phages assault a bacterium to turn it into a virus-making factory.