Please note that figures and equations are not available in ASCII format;
their placement within the text is noted by [fig] and [eq], respectively.
Greek symbols are spelled out. The following codes are used:
(ft) for footnote; (sup) for superscript; (sub) for subscript;
/= for greater than or equal to. Italics are indicated by underlining before
and after the italicized word(s) (e.g., _E.coli_ for E. coli).