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Lysozyme Retention by Cockroach Periplaneta americana L.

Denis R. A. Wharton
Science
New Series, Vol. 163, No. 3863 (Jan. 10, 1969), pp. 183-184
Stable URL: http://www.jstor.org/stable/1725583
Page Count: 2
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Abstract

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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