In article <belin-070994161359 at anapat1.univ-lyon1.fr>,
belin at cimacpcu.univ-lyon1.fr (CJF 90/10 INSERM) wrote:
> Hello everybody.
>> What's following is not a joke...I'm writing a paper, and because my
> english is rather poor I've got a little problem.
>> Here my problem :
> " (...) were detected as early as the twentieth day of gestation in rat
> embryo before any nerve ending is/are observed in the pineal
>> Thank you very much for your help.
"...before any nerve ending(S WERE) observed in..."
--verb tense agreement.