Lysozyme Retention by Cockroach Periplaneta americana L

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Science  10 Jan 1969:
Vol. 163, Issue 3863, pp. 183-184
DOI: 10.1126/science.163.3863.183


Blood from the cockroach Periplaneta americana usually does not react with a suspension of Micrococcus lysodeikticus. When lysozyme is added to the mixture it causes an immediate reduction in the optical density at 450 nanometers which is soon followed by a strong rise. Blood from roaches injected with lysozyme causes a similar series of changes in the optical density of a suspension of M. lysodeikticus, an indication that lysozyme has been retained in the blood. It may persist for many days or weeks.

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