specific

A fact about some part (as opposed to general).

A medicine that has a mitigating effect on a specific disease.

“quinine is a specific for malaria”

Being or affecting a disease produced by a particular microorganism or condition; used also of stains or dyes used in making microscope slides.

“quinine is highly specific for malaria”

“a specific remedy”

(sometimes followed by `to') applying to or characterized by or distinguishing something particular or special or unique.

“rules with specific application”

“demands specific to the job”

Stated explicitly or in detail.

“needed a specific amount”

Relating to or distinguishing or constituting a taxonomic species.

“specific characters”