In order to explore the importance of the transformer (tra) gene in reproductive mode switching in Daphnia pulex, we studied the effect of silencing of this gene using RNA interference (RNAi). We obtained Dptra dsRNA by constructing and using a dsRNA expression vector and transcription method in vitro. D. pulex individuals in different reproductive modes… (More)
A young man presented with headache, proptosis, and asymmetric ophthalmoplegia. He was found to have a mass in an unusual area of the brain. The differential diagnosis, diagnostic testing, pathology, treatment, and prognosis of this rare tumor are discussed in detail.