What is the fine-grained topic of the following text: Author: Shimkets, Lawrence J., McArthur, J. Vaun, Wise, Mark G.
The allelic variation in a population of Burkholderia cepacia isolated from a blackwater creek was studied by using the multilocus enzyme electrophoresis technique. Only return the topic.
Studying allelic variation in Burkholderia cepacia from a blackwater creek using multilocus enzyme electrophoresis.