Hi davidjones1105,
It’s most likely part of another bipolar cell or possibly a glial cell. The reason it looks different and has so many small segment bits is that the intracellular organelles such as mitochondria, etc. are visible.
When the e2198 dataset was prepared, an unconventional stain was used to mark the boundaries between neurons while leaving intracellular organelles unstained. The process wasn’t perfect which is why sometimes you see organelles.
Best,
M.