Open data: enforce materials sharing : Nature : Nature Research

"The deposition and sharing of research materials is an often-overlooked but crucial aspect of the debate on open data, even though deposition is straightforward and free of charge (see Nature546, 327; 2017). Although Nature, for instance, has a clear policy on materials sharing and deposition (see go.nature.com/2tj3hv5), sending a materials request to a busy lab can incur delays or be unproductive if, say, the first author has moved on. Moreover, good reagents will be requested hundreds of times, but few labs want to process that many requests."