Wilhelm Roux Arch Entwickl Mech Org. 1973 Jun;173(2):107-121. doi: 10.1007/BF00575137.
Wilhelm Roux' Archiv fur Entwicklungsmechanik der Organismen
[Article in German] Werner A Müller
PMID: 28304706 DOI: 10.1007/BF00575137
1. The metamorphosis of the planulae ofHydractinia echinata (Hydrozoa) is induced by certain marine, gramnegative bacteria which at the end of the exponential growth release a stimulating principle. 2. The stimulus is liberated by stationary cells previously cultivated at low population densities (up to 10