Monsanto Research:

Beekeepers, Monsanto come together for summit Jun 13, 2013

Excerpt: "The company is working on a new technology intended to control a tiny insect, called the varroa mite, that has been a major factor in the decimation of honey bees. If Monsanto successfully brings the technology to market, it could be a blockbuster."

Bayer-Crop Science Research:

A new way of protecting bees against varroa mites

Excerpt: "In the past, efforts to control this parasite have concentrated exclusively on treatment in the hive, but foraging bees then bring back new mites when they return home. Bayer’s scientists have been working with bee researchers from Frankfurt University to develop the varroa gate, which is designed to prevent reinfection. This innovative front door should effectively protect the hive against the deadly parasite."