Sample Collection Dna Extraction And Dna Quantitation

... The blood or semen that [the perpetrator of a crime] deposits or collects - all these and more bear mute witness against him. This is evidence that does not forget. Physical evidence cannot be wrong; it cannot perjure itself; it cannot be wholly absent. Only human failure to find, study and understand it can diminish its value.

(Paul Kirk, Crime Investigation, 1953)

Before a DNA test can be performed on a sample, it must be collected and the DNA isolated and put in the proper format for further characterization. This chapter covers the important topics of sample collection and preservation, DNA extraction, and DNA quantitation. Each of these steps is vital to obtaining a successful result regardless of the DNA typing procedure used. If the samples are not handled properly in the initial stages of an investigation, then no amount of hard work in the final analytical or data interpretation steps can compensate.


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Stammering Its Cause and Its Cure

Stammering Its Cause and Its Cure

This book discusses the futility of curing stammering by common means. It traces various attempts at curing stammering in the past and how wasteful these attempt were, until he discovered a simple program to cure it. The book presents the life of Benjamin Nathaniel Bogue and his struggles with the handicap. Bogue devotes a great deal of text to explain the handicap of stammering, its effects on the body and psychology of the sufferer, and its cure.

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