application of either more rigorous or more selective bioburden reduction techniques. Such potential new methodologies for bioburden reduction are also discussed in Chapter 6.

Many of the same molecular detection technologies that will permit development of a detailed understanding of spacecraft bioburden can also be used to conduct extremely sensitive searches for life on Mars. Some of these searches could be confounded by nonliving terrestrial contaminants, such as the remains of dead microorganisms that were carried on spacecraft. Chapter 7 discusses the need to detect and limit nonliving contaminants of concern.

Finally, in Chapter 8, drawing on the information in Chapters 1 through 7, the committee presents its findings and recommendations. Chapter 9 concludes the report by providing a roadmap for the implementation of these recommendations.

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