By treatment of chorioallantoic membranes from embryonated eggs with collagenase and hyaluronidase before the conventional application of trypsin cells could be grown in culture which supported growth of a large variety of myxoviruses, herpesviruses, avian reoviruses and the infectious bronchitis virus of chickens. The cultures could be used for sensitive plaque assays and neutralization tests.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7087208PMC
http://dx.doi.org/10.1007/BF02120764DOI Listing

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