Executive branch officials troop to the Senate to attest to the verifiability of provisions they know to be deficient in important respects.

CENTERFORSECURITYPOLICY: Center for Security Policy | Submitted Testimony Of Frank J. Gaffney, Jr. Before A Joint Hearing Of The Senate Governmental Affairs Committee And The Permanent Subcommittee On Investigations

Many women of childbearing age in Scotland are known to be deficient in key nutrients including iron, calcium, folate and vitamin D.

BBC: Vitamin D and weaning advice for new Scottish mothers

If he gets it wrong he may be forced to share a confined space for an indefinite period with someone deficient in wit, aptitude and hygiene, with nothing but a flimsy partition for protection.

ECONOMIST: Application

Some vegetarians, however, are deficient in protein, iron and certain vitamins and minerals, which can be associated with muscle soreness.

CNN: Could low iron, protein contribute to soreness after exercise?