The broad-spectrum antiviral ribonucleoside ribavirin is an RNA virus mutagen

Shane Crotty, David Maag, Jamie J. Arnold, Weidong Zhong, Johnson Y. N. Lau, Zhi Hong, Raul Andino & Craig Cameron

Nature Med. 6, 1375–1379 (2000).

On page 1378, the caption below Table 3 was incorrect. The correct caption is printed here.

a, per 10,000 nucleotides. Data for total mutations are greater than the sum of the two columns, as other transition (U to C, A to G) and transversion (G to U, G to C and U to A) mutations were also detected. *, P < 0.0004 and **, P < 0.0000002, compared with no ribavirin (two-tailed, unpaired Student's t-test). A total of 42,335 nucleotides was sequenced.

We regret this error.

Isolation of primary HIV-1 that target CD8 + T Lymphocytes using CD8 as a receptor

Kunal Saha, Jianchao Zhang, Anil Gupta, Rajnish Dave, Meron Yimen & Bouchra Zerhouni

Nature Med. 7, 65–72 (2001).

On page 68, Fig. 4c was incorrect. The correct Fig. 4c is printed here. 

We regret this error.