u/Dependent_Craft_1935

Sample was taken from a 21 year old male and was prepped following instructions on https://www.protocols.io/view/preparation-of-human-red-blood-cells-for-scanning-8epv56bkng1b/v1

Thinking it could be fibrin, preparation induced cell damage or some drying artifacts, but there aren’t many visual matches online and I haven’t worked with blood in the SEM before.
Any ideas are appreciated.