![](https://putnamgroup.engineering.cornell.edu/files/2020/02/IMG_8712-1-1024x768.jpg)
The Putnam group celebrating Dr. Kopecek’s 80th birthday
![](https://putnamgroup.engineering.cornell.edu/files/2020/02/IMG_8654-1024x768.jpg)
Dave hosting Kopecek Jeopardy at Dr. Kopecek’s 80th Birthday Symposium
![](https://putnamgroup.engineering.cornell.edu/files/2020/02/IMG_8992-768x1024.jpg)
Mariela becomes one with nature by skiing directly into a tree. No trees were harmed in the taking of this photo.
![](https://putnamgroup.engineering.cornell.edu/files/2020/02/IMG_8990-1-768x1024.jpg)
Ruben is very excited to be skiing!
![](https://putnamgroup.engineering.cornell.edu/files/2020/02/IMG_5993-1-1024x768.jpg)
Group ski trip to Alta in Utah!
![](https://putnamgroup.engineering.cornell.edu/files/2014/07/Putnam-Group_01_April-2018_Photo-by-Robyn-Wishna-rvgfe3.jpg)
The Putnam group takes a break from hard work in lab to pose for a group photo.
![](https://putnamgroup.engineering.cornell.edu/files/2014/07/Putnam-Lab_03_April-2018_Photo-by-Robyn-Wishna-231na1i.jpg)
Jason and Sarah synthesize poly(acrylic acid)
![](https://putnamgroup.engineering.cornell.edu/files/2014/07/Putnam-Lab_10_April-2018_Photo-by-Robyn-Wishna-22bgp3x.jpg)
Dave and Hania prepare samples for lyophilization.
![](https://putnamgroup.engineering.cornell.edu/files/2014/07/Putnam-Lab_05_April-2018_Photo-by-Robyn-Wishna-10e3cam.jpg)
Hannah works on an MTT assay.
![](https://putnamgroup.engineering.cornell.edu/files/2014/07/Putnam-Lab_06_April-2018_Photo-by-Robyn-Wishna-1heu6oy.jpg)
Beatrice and Jenna diligently work with OMVs.
![](https://putnamgroup.engineering.cornell.edu/files/2014/06/IMG_8992-2h8f965-e1521493809472.jpg)
Lab bonding time!
![](https://putnamgroup.engineering.cornell.edu/files/2014/06/IMG_8321-1k5lht8-1024x768.jpg)
Ski savvy Hania teaches Sarah how to balance on cross country skis.
![](https://putnamgroup.engineering.cornell.edu/files/2014/06/IMG_6438-1mhmkpm-577x1024.jpg)
Jason models apparel from VWR’s summer collection.
![](https://putnamgroup.engineering.cornell.edu/files/2016/10/Zhexun-and-lindsey-12cb2su.jpg)
Mini Putnam Lab reunion at the BMES annual meeting
![Even when on sabbatical, Dave's presence can still be felt in lab](https://putnamgroup.engineering.cornell.edu/files/2016/05/IMG_0834-1llopds-300x300.png)
Even when on sabbatical, Dave’s presence can still be felt in lab
![IMG_8588](https://putnamgroup.engineering.cornell.edu/files/2016/05/IMG_8588-1wsheud-e1464283942836-225x300.jpg)
Congrats to newly minted Dr. Jose!
![Jason prepares to bowl](https://putnamgroup.engineering.cornell.edu/files/2015/12/eating-2dz0rbx-300x225.jpg)
Jason prepares to bowl
![group2](https://putnamgroup.engineering.cornell.edu/files/2015/12/group2-pr5xez.jpg)
The Putnam Group takes a break from intense bowling to pose for a picture.
![](https://putnamgroup.engineering.cornell.edu/files/2016/01/Nicole-wedding3-271m0hu-300x176.jpg)
The Putnam Lab gathers at Nicole’s wedding…Nicole not pictured
![Group celebrates Mingchee's defense with Thai food](https://putnamgroup.engineering.cornell.edu/files/2015/02/20150225_193251-1d1oqfk-e1425061262279-300x169.jpg)
Group celebrates Mingchee’s defense with Thai food
![Joseph presents his research on vaccine design](https://putnamgroup.engineering.cornell.edu/files/2014/06/Joseph-Rosenthal-in-action-2h0u5u9-300x187.png)
Joseph presents his research on vaccine design
![The Putnam lab grabs lunch during a group outing to Greek Peak. Thanks Dave!](https://putnamgroup.engineering.cornell.edu/files/2014/06/lunch-at-group-ski-trip-1uf4zi3-300x225.jpg)
The Putnam lab grabs lunch during a group outing to Greek Peak. Thanks Dave!
![Mingchee, Bailey, and Janis discussing science in lab](https://putnamgroup.engineering.cornell.edu/files/2015/02/IMG_3880-1zeon88-300x225.jpg)
Mingchee, Bailey, and Janis discussing science in lab
![Lindsey examines her cell babies](https://putnamgroup.engineering.cornell.edu/files/2015/02/Lindsey_Microscope-1la01ej-300x225.jpg)
Lindsey examines her cell babies
![Cassie-wedding](https://putnamgroup.engineering.cornell.edu/files/2016/01/Cassie-wedding-2dqi8g7.jpg)
Celebration time at Cassie’s wedding!
![](https://putnamgroup.engineering.cornell.edu/files/2014/11/IMG_1202-2co6q34-300x225.jpg)
Gentlemen at the 2014 Annual Meeting of the Controlled Release Society
![Cassie prepares to grow up some bacteria](https://putnamgroup.engineering.cornell.edu/files/2015/02/IMG_3807-2iqn7im-300x225.jpg)
Cassie prepares to grow up some bacteria
![IMG_4659](https://putnamgroup.engineering.cornell.edu/files/2015/02/IMG_4659-17av5to-300x225.jpg)
Jason and the GPC
![Lindsey and Nicole at the annual chemical engineering holiday party](https://putnamgroup.engineering.cornell.edu/files/2015/02/20141212_210208-pf8iir-e1425060978148-576x1024.jpg)
Lindsey and Nicole at the annual chemical engineering holiday party