Due to a lapse in government funding, the majority of this website is not being updated until further notice. Learn more
NIST websites for programs using non-appropriated funds (NVLAP and PSCR) or those that are excepted from the shutdown (such as NVD) will continue to be available and updated.
Image of an agar plate streaked with 16 different strains of Escherichia coli, each containing a green fluorescent protein with a different start codon (annotated along the edge of the plate). The 16 codons correspond to the 16 strongest expressing codons. Image is a composite of two super-imposed images from a laser scanner.