Out today in @PNASNews we reveal how Ca2+ signals coordinate the flow of milk from secretory alveoli to the nipple during lactation doi.org/10.1073/pnas.2… A wonderful team effort by @Stevenson_alex2 @DrYassum @tenealestewart @DrNickCondon @BethLloydLewis @LabEthan @_adamewing 1/ Using volumetric #calcium imaging we show how #oxytocin (released in response to suckling) produces Ca2+ #oscillations in mammary basal cells, causing them to contract and repetitively deform the innermost layer of secretory cells (shown here in red) 2/