They always seem to butt heads when they end up talking about politics.

Treated and control cells were harvested by tripsinization, and a small aliquot from the cell suspension was counted by a Coulter counter to have an estimate of cells number in each sample.

The old maxim, Lucky at cards, unlucky in love, is applied to chess.

The trouble is, it often takes considerable juggling of the component values in the circuit around the junkbox semiconductors before your completed project performs as the author's did.