try hemocyanin from keyhole limpet :-)
Lajos
<axlprose at gmail.com> wrote in message
news:1126982538.375946.258160 at f14g2000cwb.googlegroups.com...
> Hi,
>> Anybody know of a transparent protein which could bond with oxygen?
>> I'm breeding a 70% invisible soldier for the (US!) government & am
> trying to come up with a substitute for haemoglobin.
>> Many thanks,
> Axl
>