Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001564590-16-017853-index.html | 2016-05-05 11:06:53 | |
| 0001564590-16-017853.txt | 2016-05-05 11:06:53 | |
| atra-8k_20160505.htm | 27324 | 2016-05-05 11:06:53 |
| atra-ex991_6.htm | 90337 | 2016-05-05 11:06:53 |