semar4dSemar 4d. Semar 4d. 8514 4-13 33 8POLI C3PTS.CUSTOMER QUOTES The real power of SEMAR is in the ability to clearly visualize the adjacent soft tissue structures freeSemaphorin 4D (Sema4D) is a classic member of the semaphorin family involved in axonal guidance processes. The key effects of Sema4D in neurons are mediated by hh affinity