[DS9] Season 2, Episode 4 (Netflix: S2 E4): Invasive Procedures
We get another look at Trills. They establish that not every Trill gets a symbiont (only 1 in 10). It’s a sad story for the 9/10, which is depicted in this episode, and makes Jadzia seem a bit more special. “Invasive Procedures” also tackles some strange nuances in the relationship between a symbiont and it’s host.
Read more at Memory Alpha
Notes:

It was all because Quark made a deal. It’s hard to believe Quark would do something THAT bad. Greed is one thing, but getting your friends killed?

Was it Quark’s plan to get injured while attacking, have Bashir request help in fixing him, and have Bashir knock out the guy? Glad it worked out

They figure out that Odo has been freed and try to get out of there. Kira: “If Odo’s free, there’s no way you’re getting off this station”

Hmmm, that’s weird. The ship is gone and there’s a random cart sitting in the airlock. I wonder if it’s Odo.
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