恒牙龋总数：见rate项下- reticuloendothelium
- reticulohistiocytary
- reticulohistiocytoma
- reticulohistiocytosis
- reticuloid
- reticuloma
- reticulopenia
- reticuloperithelium
- reticulopituicyte
- reticulopodia
- reticulopodium
- reticulosis
- reticulothelium
- reticulum
- retiform
- retina
- Retin-A
- retinaculum
- retinal
- retinal isomerase
- retine
- retinene
- retinitis
- retinoblastoma
- retinochoroid