Step-by-step protocol, also available on protocols.io.

<p>This protocol follows the guanidine treatment protocol by Straube et al. (2021) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0309596#pone.0309596.ref022" target="_blank">22</a>], based on Dabney et al. (2013) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0309596#pone.0309596.ref030" target="_blank">30</a>] and Rohland et al. (2004) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0309596#pone.0309596.ref031" target="_blank">31</a>].</p> <p>(PDF)</p>