The ant poisons the plants by injecting formic acid into the base of the leaf.

Some insects inject formic acid, which can cause an immediate skin reaction often resulting in redness and swelling in the injured area.

The system injected chlorosulfonic acid into the engine tailpipe when the drone entered hostile territory, which created very tiny ice crystals, forming a transparent contrail.

Abdulmutallab apparently had a packet of the plastic explosive sewn to his underwear, and injected liquid acid from a syringe into the packet to cause a chemical reaction.

He can die from too much acid, just as if he had injected hydrochloric acid into his veins.

The bite burns, like it injected acid.

The ants inject formic acid into surrounding plants, killing small trees and shrubs.

A decade earlier Sidney Farber had discovered that injecting folic acid into children with leukemia accelerated the progress of the disease.

With them Dytiscus impales creatures that float by, "maybe a mosquito wriggler," injects digestive acid into them and pumps their dissolved insides out.

Oil production may be stimulated by injecting hydrochloric acid into the rock formation of an oil well, dissolving a portion of the rock, and creating a large-pore structure.