Trophectoderm biopsy protocols can affect clinical outcomes: time to focus on the blastocyst biopsy technique.

Objective: To compare two different blastocyst biopsy protocols.

Design: Retrospective single-center cohort study.

Settings: Private in vitro fertilization center.

Interaction of potato production systems and the environment: a case of waste water irrigation in central Washington.

Potato production and processing are very important activities in the agricultural economy of the Pacific Northwest. Part of the reason for the development of this industry has been the availability of water for both growing and processing. A great amount of water is used in processing potato products, such as frozen French fries, and the waste water is a pollutant because it contains high levels of nitrate and other nutrients.