There seemed to be confusion around the public health agencies about whether the ban originated at the agency’s parent department, Health and Human Services, or inside the C.D.C. itself; and whether such a ban would apply beyond budget documents. The Food and Drug Administration was quick to note that it had gotten no such instruction. An agency spokeswoman, Jennifer Rodriguez, said, “We haven’t received, nor implemented, any directives with respect to the language used at F.D.A. to describe our policy or budget issues.” The National Institutes of Health referred inquiries to Health and Human Services.