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New Penn Vet research moves science closer to a solution to male infertility
Microscopic Spermatogonia.

Spermatogonia generated from pluripotent stem cells.

(Image: Courtesy of Kotaro Sasaki)

New Penn Vet research moves science closer to a solution to male infertility

By converting human skin or blood cells into stem cells and coaxing them into early-stage human sperm cells, researchers are furthering the understanding of how sperm cells are formed.

From Penn Vet

The lasting impacts of West Nile virus on Pennsylvania bird populations
American goldfinch.

Image: Fernando Burgalin Sequeira / 500px via Getty Images

The lasting impacts of West Nile virus on Pennsylvania bird populations

Using mosquito surveillance data, researchers at Penn Vet have modeled the occurrence of West Nile virus in Pennsylvania bird species. Understanding how species traits influence response to the virus will improve wildlife conservation and disease management strategies.

From Penn Vet

2 min. read

A New Bolton Center team’s beat-the-odds surgery means survival for a special horse
Monty the horse after surgery being rehabilitated.

Monty being led back to his stall after a successful surgery.

(Image: Courtesy of David Levine)

A New Bolton Center team’s beat-the-odds surgery means survival for a special horse

Experts at Penn Vet devised a complex surgical plan for 10-year-old thoroughbred Monty, enabling the beloved horse—whose survival chances were slim—to beat the odds.

From Penn Vet

2 min. read

On the move: Water quality and antimicrobial resistance testing goes mobile
Arnav Lal collects water at Playa Baquerizo on San Cristóbal Island as a sea lion watches.

Arnav Lal collects water at Playa Baquerizo on San Cristóbal Island as a sea lion watches.

(Image: Lisa Mattei)

On the move: Water quality and antimicrobial resistance testing goes mobile

Penn researchers have developed a mobile field laboratory allowing them to test water quality and track antimicrobial resistance in and around San Cristóbal in the Galápagos.

4 min. read

Dog days
Dog Days of Summer

nocred

Dog days

A roundup of stories from Penn Today on veterinary research in cancer immunotherapy, hip replacement, retinal disease, and the direct impact of pet CPR.

Penn Today Staff

2 min. read

New frontiers in cancer interception
Researchers in the lab of Robert Vonderheide.

Researchers in the lab of Robert Vonderheide at Penn’s Abramson Cancer Center.

(Image: Margo Reed Studio)

New frontiers in cancer interception

The science of cancer interception is advancing at Penn Medicine with a new platform to develop cancer vaccines that piles scientific strength upon strength.

Christina Hernandez-Sherwood

2 min. read

Running the Cocodona 250 and hiking the Trans Bhutan Trail: This Penn Vet clinician thinks big
Rose Nolen-Walston makes her way through the Cocodona 250.

Penn Vet’s Rose Nolen-Walston makes her way through the Cocodona 250 in May 2026.

(Image: Courtesy of Rose Nolen-Walston)

Running the Cocodona 250 and hiking the Trans Bhutan Trail: This Penn Vet clinician thinks big

Rose Nolen-Walston, a Penn Vet associate professor of large animal internal medicine, has a history of doing hard things. “I didn’t take the conventional path to vet school. I didn’t take the conventional path to running the Cocodona 250.”

From Penn Vet

2 min. read

Meet foxes, coyotes, deer and other wildlife neighbors
A red fox in the snow.

A red fox in Philadelphia caught by a trail camera last winter in Penn Vet’s Accessing Urban Nature Initiative.

nocred

Meet foxes, coyotes, deer and other wildlife neighbors

Penn Vet’s Accessing Urban Nature Initiative is documenting Philadelphia’s wildlife through trail cameras, and shares its findings after a year of monitoring.

From Penn Vet

2 min. read

What a ‘silenced’ chromosome can tell us about autoimmunity
female chromosomes

Image: Kateryna Kon/Science Photo Library

What a ‘silenced’ chromosome can tell us about autoimmunity

Systemic lupus erythematosus (SLE), the most common form of lupus, is an autoimmune disorder that occurs more frequently in women. Having multiple X chromosomes has been associated with an increased risk of developing lupus; however, the reason for this link is still not fully understood and may involve how X chromosomes are regulated in female immune cells.

3 min. read