Sentence examples for both humans were negative from inspiring English sources

None of the human C. suis isolates contained the tet(C) gene and both humans were negative for C. trachomatis.

However, about 15-20% of breast cancers in humans are negative for both ER and PR, typically in more poorly differentiated tumors [ 42].

A similar test kit designed for use in humans was negative in all samples and produced negative results even when known positive samples were tested.

All human samples were negative for anthrax.

Other tests for Chlamydophila pneumoniae, Legionella and human metapneumovirus were negative.

In contrast to the α-MMTV positive control serum, the human sera were negative or had only weak, nonspecific reactivity.

Both human breast cancer cell lines were negative for estrogen receptor (ER) and human epidermal growth factor receptor (Her -2 and classified as 'basal pHer -2pe andclassified].

Serological tests for hepatitis C and B and human immunodeficiency virus were negative.

Skin tuberculin test and blood serology for syphilis, borreliosis, toxoplasmosis, and human immunodeficiency virus were negative.

All human serum samples were negative for various helminthic diseases.

Serological tests for human immunodeficiency virus (HIV) were negative.