This release contains only the music track from Base by Base Episode 462.

Song title: Along the Vessels
Original Base by Base episode: 462: A vessel gene tied to AMD dims low-light vision in mice

Article metadata:
Article title: Genetic evidence and cross-species functional characterization implicate CNN2 in age-related macular degeneration susceptibility
Journal: Proceedings of the National Academy of Sciences
DOI: 10.1073/pnas.2533682123
Reference: Cheng, F.-F., Mou, H., Liu, Z., Zhang, C.-J., Zhuang, Y.-Y., Wu, Z., Wen, X.-R., Xue, A., Zhang, X., Yang, J., and Jin, Z.-B. (2026). Genetic evidence and cross-species functional characterization implicate CNN2 in age-related macular degeneration susceptibility. Proceedings of the National Academy of Sciences 123(36), e2533682123. https://doi.org/10.1073/pnas.2533682123

Lyrics:
Verse 1
They traced the dimming of the aging eye to sixty-three old doors,
But behind so many of those doors the culprit was unsure,
They matched the blood against the risk and whittled it to nine,
And four held true inside the eye, like lanterns down the line.

Pre-Chorus
They brought the four to little fish and quieted each one,
And two of them left smaller eyes that turned away from sun,
Then they gave the message back again, and most of it was won.

Chorus
It's a gene that lives along the vessels, not within the light,
But take it from the mouse and watch the dusk slip out of sight,
The faint grey lines run into one, the finer shadings fade,
Though bold black stripes still find the eye, and daylight isn't frayed.

Verse 2
By three months and by five, the layer that catches light grew thin,
The cones grew sparse, the signals dropped, as something wore within,
Yet the gene was hardly in those cells; it kept the vessel walls,
The quiet keepers of the blood that run behind the halls.

Bridge
Now did it starve the light from back, or strike those cells alone?
The mice can't say, the fish can't say, the answer isn't known,
And neither has the center spot where human sight is sown,
So they call it a suspect now, not a verdict set in stone.

Final Chorus
It's a gene that lives along the vessels, not within the light,
But take it from the mouse and watch the dusk slip out of sight,
The faint grey lines run into one, the finer shadings fade,
And in the aging eye, they ask, if that is how dusk is made.

• (00:00:10) - Tracing Age-Related Vision Loss to Genetic Suspects
• (00:00:35) - Testing the Gene in Zebrafish
• (00:00:56) - The Vessel Gene and Vision Decline in Mice
• (00:01:32) - Retinal Thinning and the Blood Vessel Connection
• (00:01:57) - Unanswered Questions: Starvation or Damage?
• (00:02:44) - Recap and Implications for Human Sight