Morphing structure in sample of Pfizer Cominarty

Observation by Dr David Nixon on 23 or 25 October 2022 (exact date to be clarified). Dark field, magnification 200x. Sample prepared 4 August 2022. No cover slip, but kept in a slide cabinet. This is the final segment of a 70 GB file made available by Dr Nixon. I have speeded it up 10x.

Extract starts with 06:39:28 on the clock. The following forms are visible:

06:39:28 Rectangle with bright rim with rounded corners
06:46:41 Rectangle with mainly dark rim and sharper corners
06:57:29 Back to bright rim and rounded corners
07:25:10 A shrunken oval with a bright rim
07:32:50 Octagonal with four of the sides very bright
07:37:30 framed rentangle with symmetrical features at the corners
07:44:20 rounded rectangle with bright rim
07:45:00 back to the framed rectangle
07:46:32 enlarged version of the same
07:49:44 a shrunken oval with bright rim
07:50:20 object disappears with a flash, leaving only a rectangular residual background
Small objects can be seen moving around until the end of the video at 08:00:00, suggesting that there may still be a fluid medium.

More information at https://drdavidnixon.com/1/en/topic/video-1