Pushing the bounds of imaging isn’t new for the San Francisco Biohub and Imaging Institute. Both organizations have already taken down barriers to research by building imaging tools that don’t exist anywhere else, as well as creating pioneering cell atlases that have redefined how we understand health and disease.

One example is the San Francisco Biohub’s research on how zebrafish embryos develop over time. In order to capture video images of whole zebrafish embryos through various developmental stages, Biohub scientists built a custom microscope, along with novel software that can find and track the movement of each cell in the videos. The “Google Earth” of embryology resulting from this research is Zebrahub, which brings a new vision to developmental biology and helps us understand our own cellular origins.

Projects like Zebrahub require scientists from a host of different disciplines. Teams across the Biohub, along with interdisciplinary partners, worked to build the microscope, develop the cell tracking software and interpret the resulting images. The collaborative nature of this project isn’t unique to our research on zebrafish — it’s part of our philosophy, and we believe collaboration is critical to drive scientific advancement in all of our work.

Raw milk cheese products contained infectious avian influenza virus when made with contaminated raw milk, creating potential health risks for consumers, according to a new study.

At the same time, no virus was detected in test samples of highly acidic raw milk cheese. Feta cheese is an example of a more acidic variety.

The study is published in Nature Medicine.

Analysis of preserved feces and intestinal tissue has revealed specific types of bacteria that were present in the microbiome of a young adult man who lived in Mexico about 1,000 years ago, prior to Spanish colonization. Santiago Rosas-Plaza of Universidad Nacional Autónoma de México and colleagues present these findings in PLOS One.

The human gut microbiome consists of microorganisms, including bacteria, that naturally live in people’s intestines. Certain types of bacteria are widely associated with the human gut microbiome, but a person’s particular mix of bacteria may vary depending on factors such as age, diet, health, and where they live. Studying ancient microbiomes using mummies and human remains can therefore deepen understanding of ancient populations and show how the human microbiome may have changed over time.

A growing number of ancient microbiomes have been revealed, including for an ancient Incan person and Germany’s “Tyrolean Iceman.” To further expand the field, Rosas-Plaza and colleagues analyzed the exceptionally well-preserved remains of a man discovered in a rock shelter in Zimapán, Mexico. Prior analyses suggest the “Zimapán man” was most likely a seasonal seminomadic hunter-gatherer who was part of the ancient Mesoamerican Otopame culture and died about 1,000 years ago between the ages of 21 and 35.

Mayo Clinic researchers have identified a protein that acts like a traffic controller for DNA, preventing damage during cell division—a discovery that could lead to new cancer therapies, according to a study published in Nature.

“DNA is the code of life. It’s critical for how a cell functions, but it’s also critical for our own being and defines what we are,” says Zhenkun Lou, Ph.D., the Swanson/Schmucker Endowed Professor to Support Health and Cancer Research at Mayo Clinic and the senior author of the new study.

When cells divide, DNA must be copied from one cell to the next—a process called replication. Dr. Lou’s research team discovered that a protein called KCTD10 plays a surprising role in protecting DNA during this critical stage. Acting like a built-in sensor, KCTD10 helps shield the DNA replication machinery from damage.