Fig. 2From: Establishment and validation of a callus tissue transformation system for German chamomile (Matricaria chamomilla L.)Effects of hygromycin on explant growth A Explants grown for 3 days (without Hyg). B Explants grown for 14 days (without Hyg). C Explants grown for 14 days (including 10 mg/L Hyg). D Explants grown for 14 days (including 15 mg/L Hyg)Back to article page