J of Appl Polym Sci
when oxidative stress depletes GSH faster than it can be regenerated, the ratio collapses, signaling cellular redox imbalance
Zone 2 (Europe excluding the EU): Aland Islands (Finland), Andorra, Albania, Armenia, Azerbaijan, Mount Athos (GR), Bosnia-Herzegovina, Campione d'Italia (IT), Ceuta (E), Faroe Islands (DK), Georgia, Gibraltar (GB), Greenland (DK), Guernsey (GB), Iceland, Jersey (GB), Canary Islands (E), Kazakhstan, Kosovo (Serbian province), Liechtenstein, Livigno (IT), Macedonia, Melilla (E), Moldova (Republic ), Montenegro (Republic), Norway, Russian Federation, San Marino, Serbia (Republic), Turkey, Ukraine, Vatican City, Belarus, Cyprus / Republic (North part) Zone 3 (World): Egypt, Algeria, Bahrain, Iran, Iraq, Israel, Yemen, Jordan, Qatar, Kuwait, Lebanon, Libya, Morocco, Oman, Saudi Arabia, Syria, Tunisia, United States, United Arab Emirates Zone 4 (Rest of World): All other countries and areas that are not listeted in zone 1, 2 and 3
Journal of Trace Elements in Medicine and Biology, 28, 266-270