Changes in gene activity may also occur well before other more visible symptoms of harm, like tumors, which can take months to develop.

Recovery: but those who had recovered completely, at least so far as the visible symptoms went, were not helping the others.

The visible symptom has stopped, but that says absolutely nothing about the underlying cause.

At any moment the tension inside you was liable to translate itself into some visible symptom.

These visible symptoms further reinforce the anxiety in the presence of others.

I think it's still there- but with no visible symptoms now.

Spiked trees die within 1-2 years after the appearance of visible symptoms.

The site of infection is a visible symptom of the disease.

Dwarfism is often diagnosed in childhood on the basis of visible symptoms.

None of the visible symptoms were discernible from those he already showed.