Counter immunoelectrophoresis in rapid diagnosis of pox virus infections

The use of the counter immunoelectrophoresis technique enhanced the reaction between vaccinia virus and its antibody. By means of 0.7% and 1% solutions of agarose, sharp, clear lines of precipitation were obtained within 30 minutes at 200 volts.

Air Pollution Affects Pattern of Photosynthesis in Parmelia sulcata , a Corticolous Lichen

Lichen disks kept in flasks contaminated with sulfur dioxide showed morphologic and photosynthetic abnormalities similar to those of lichens from an industrial center in Sweden, but lichens dried out for 4(1/2) to 6 months in the laboratory showed neither. Thus some kinds of lichens may be absent from city environments because of atmospheric pollutants which destroy chlorophyll.