Free-swimming bacteria of the genus Spirillum
are clearly resolved by
a replica Leeuwenhoek microscope, using a single lens as magnifying component.
A colony of Microspora cells, with all
the apperarance of viability, was seen
in a reconstituted algal specimen originally sent to London by Leeuwenhoek in the 17h century.
The truffle, Tuber melanospora, has
spores with spiny projections
of bacterial dimensions. They are clearly resolved by the Leeuwenhoek lens.
A single lens - like Leeuwenhoek's original
microscope - resolves
the tripartite structure of a human spermatozoon.