Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001564590-16-027508-index.html | 2016-11-04 08:15:26 | |
| 0001564590-16-027508.txt | 2016-11-04 08:15:26 | |
| atra-8k_20161104.htm | 27115 | 2016-11-04 08:15:26 |
| atra-ex991_6.htm | 274335 | 2016-11-04 08:15:26 |