LCP microcrystallization of RCvir. (a) Early leads after screening. (b) Thin needle-like crystals which grew in syringes and diffracted to 2.4 Å resolution at SACLA but with a low hit rate. (c) Initial crystals grown in 800 µl glass wells. These crystals diffracted to 2.2 Å resolution at SACLA but had a long crystal axis and could not be indexed. (d) Seeded LCP crystals suitable for SFX and TR-SFX studies using XFEL radiation. These crystals diffracted to 2.25 Å resolution.