false-positive reaction

The trials produced positive results, published in The New England Journal of Medicine in November.

He was positive he had seen some one enter the room, go to the chair, and take the money from his pockets.

But the sheer quantity of the inflated currency and false money forces prices higher still.

While this reaction lasted he laughed away the evidence, and honestly believed he was exaggerating trifles.

Ordinarily the diazo appears a little earlier than the Widal reaction—about the fourth or fifth day—but it may be delayed.

At last his anxiety reached a point where he was positive that if he received an adverse decision, it would surely kill him.