While the blood of tunicates MAY contain high levels of vanadium (the only research indicating this dates back to 1911 and nobody has been able to replicate the results since) it does not replace iron as an oxygen carrier; haemovanadin does not appear to carry any oxygen at all, and it is likely (though not confirmed) that tunicate blood also contains haemoglobin and haemocyanin. Therefore this example is at best unsubstantiated and at worst wrong. --[[User:SamCoulter|SamCoulter]] 12:50, 11 September 2011 (EDT) | While the blood of tunicates MAY contain high levels of vanadium (the only research indicating this dates back to 1911 and nobody has been able to replicate the results since) it does not replace iron as an oxygen carrier; haemovanadin does not appear to carry any oxygen at all, and it is likely (though not confirmed) that tunicate blood also contains haemoglobin and haemocyanin. Therefore this example is at best unsubstantiated and at worst wrong. --[[User:SamCoulter|SamCoulter]] 12:50, 11 September 2011 (EDT) |