Reverse transcriptase is characteristic of retroviruses, including HIV (human immunodeficiency virus), the virus responsible for AIDS (acquired immunodeficiency syndrome). All retroviruses encode a polymerase enzyme in their pol gene that is both necessary and sufficient for the replication of their RNA genomes.
PDO positive phase global pattern. The Pacific Decadal Oscillation (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin.
2017 Composite: 1984;1993;1999. n The February 2017 tropical Pacific SST anomaly pattern is similar to the February. SST anomaly pattern from the composite of the analog years (1984; 1993; 1999). n The current SST pattern reflects a transition from La NiÃ±a Modoki to ENSO-neutral,