Unidad de Sistemas Arrecifales (Puerto Morelos), Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Cancun, Mexico, Churchill College, Cambridge, United Kingdom, 3 Lab. de Estudios Isotópicos, Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Mexico, Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, Tlalpan, Mexico, 5 Se...

Endoscopic retrograde cholangiopancreatography (ERCP) has become an effective and safe therapeutic method, providing clinical success in more than 80% of cases. As ERCP has evolved from a diagnostic to a therapeutic procedure, technical demands have risen. Furthermore, it is an invasive procedure that can be potentially harmful when administered improperly. Quality of ERCP and procedural outcom...

The study of neuronal connectivity requires the ability to trace axons from the neuronal cell body to its axon terminal (anterograde tracing) and from the terminal back to the soma (retrograde tracing). Such neuroanatomical tracing is frequently used to identify neurons on the basis of their pre- or postsynaptic connections. Neuroanatomical tracing has become particularly important in nervous s...

background: olfactory ensheathing glia (oeg) has been shown to have a neuroprotective effect after being transplanted in rats with spinal cord injury. this study was conducted to determine the possible beneficial results of olfactory mucosa transplantation (omt) which is a source of oeg on functional recovery and axonal regeneration after transection of the sciatic nerve. methods: in this study...

The autometallographic retrograde tracing of zinc-containing neurons by intracerebral injection of sodium selenite (Na2SeO3), introduced by Danscher in 1982, has recently been described in more detail. Intracerebral injections of both sodium selenide (Na2Se) and sodium selenite (Na2SeO3) have been successfully used; however, sodium selenite had a rather toxic effect on the injected tissue. In t...

The retrograde neuroanatomical tracing method is a key technique to study the complex interconnections of the nervous system. Traditional tracers have several drawbacks, including time-consuming immunohistochemical or immunofluorescent staining procedures, rapid fluorescence quenching and low fluorescence intensity. Carbon dots (CDs) have been widely used as a fluorescent bio-probe due to their...