caa a22 4500 477095453 CHVBK 20180405111526.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF00186690 doi (NATIONALLICENCE)springer-10.1007/BF00186690 An ultrastructural study of glomeruli associated with vomeronasal organs transplanted into the rat CNS [Elektronische Daten] [Edward Morrison, Pasquale Graziadei] Rat neonate vomeronasal organs were transplanted into the parietal cortex of littermates to examine their survival and the behavior of axon growth into the surrounding host brain parenchyma. After survival times of 10-100 days the brains were processed for ultrastructural examination. The transplanted vomeronasal organs (VNO) formed several vesicles lined with a sensory epithelium. From these sensory epithelia, VNO neurons leave the epithelium and enter the host brain. Transplant neurons grew axons that fasciculated into bundles surrounded by sheath cell processes and formed one or more fiber plexuses containing distinct globose or spherical-shaped glomeralar-like structures. The glomeruli consisted of nerve terminals between which existed asymmetric synaptic contacts. Rarely did we observe clear reciprocal synapses. The glomeruli also contained terminals that showed signs of degeneration, such as increased density of the terminals, clumping of mitochondria and multivesicular bodies. The glomeruli were not partitioned or subdivided by glial septa; however, glial profiles were interspersed among the sensory terminals. Transplant glomeruli also lacked periglomerular cells and had no definitive glial envelope. These results suggest that glomerular formation is not dependent on dendrite contribution of second order neurons or glial support, but rather on a complementary population of receptor neurons. Springer-Verlag, 1996 Synapse nationallicence Cell migration nationallicence Olfactory neurons nationallicence Electron microscopy nationallicence Vomeronasal organ nationallicence Morrison Edward Department of Anatomy and Histology, College of Veterinary Medicine, 109 Greene Hall, Auburn University, 36849-5518, AL, USA aut Graziadei Pasquale Department of Biological Science, Florida State University, 32306-2043, Tallahassee, FL, USA aut Anatomy and Embryology Springer-Verlag 193/4(1996-04-01), 331-339 0340-2061 193:4<331 1996 193 429 https://doi.org/10.1007/BF00186690 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00186690 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morrison Edward Department of Anatomy and Histology, College of Veterinary Medicine, 109 Greene Hall, Auburn University, 36849-5518, AL, USA aut NATIONALLICENCE 700 1- Graziadei Pasquale Department of Biological Science, Florida State University, 32306-2043, Tallahassee, FL, USA aut NATIONALLICENCE 773 0- Anatomy and Embryology Springer-Verlag 193/4(1996-04-01), 331-339 0340-2061 193:4<331 1996 193 429 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer