The answer for the Image Challenge 9 is, the objects were artifacts.
Features that ruled out the presence of parasites were:
The objects had a very angular, almost spine-like, appearance suggestive of plant cells or pollen.
The objects could have been misidentified as helminth eggs.
For instance, both Ascaris sp. and Taenia sp. eggs could be within the size range of these objects. However, lack of a striated shell ruled out Taenia sp. and the angular nature of exterior of the objects ruled out Ascaris and other helminth eggs.
Mullai is the winner of Surprise Gift for hitting the right spot ! Congrats