But GLP-1 turned out to be an impractical medicine, as it degrades quickly once injected into the body.

FORBES: Drug Safety

Drug companies, including insulin maker Eli Lilly, thought so, too, but GLP-1 turned out to be an impractical medicine: Once injected into the body, it degrades quickly.

FORBES: Fat City

The next phase of targeted treatment will likely involve nanoparticles smaller-than-microscopic transport vehicles that are injected into the body and deliver their devastating payload only to a cancerous tumor.

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The new vaccine microspheres, on the other hand, can be injected straight into the body, eliminating those sorts of mistake and with them the need for the preservatives found in ordinary vaccines.

ECONOMIST: Vaccines

Digging through the trash, the reporter said he found packaging for a drug called Actovegin, which, if injected, can cause the body to process oxygen more efficiently, improving performance.

WSJ: Cycling Doctor Under a Microscope

In a study from India, kidney transplant patients had crushed donor kidney tissue injected into their thymus - the body's "immune engine room" where cells can be "educated".

BBC: 'Drug-free' transplant hope

This combo stays in the body longer than interferon and thus can be injected less often, every two weeks and possibly every four weeks.

FORBES: Magazine Article

Injected into the arm or leg, Enbrel travels through the body, binding to free TNF molecules to prevent them from docking with the real receptors.

FORBES: Chemical Chameleon

The modified T cells are grown outside the body for several weeks until billions of them are ready and are then injected back into the patient.

FORBES: Do-It-Yourselfer

Magnetic, nonradioactive nanoparticles (a tiny fraction of the thickness of a human hair and invisible to the human eye) are injected into the subject, where they bind only to known breast cancer cells within the body.

FORBES: Breast Exams: Mammography Is Not The Only Game In Town