Some examples from the web:

• Drosophila N-cadherin functions in the first stage of the two-stage layer-selection process of R7 photoreceptor afferents ... Development. 2005 Mar;132(5):953-63.
• Effects of LI4 acupressure on labor pain in the first stage of labor. J Midwifery Womens Health. 2012 Mar-Apr;57(2):133-8. doi: ...
• Diffusion of alkali metal cations in the first stage graphite intercalation compounds (GIC) LiC6, NaC6, NaC8 and KC8 has been investigated with density ...
• Oct 9, 2013 ... Authors' conclusions: There is clear and important evidence that walking and upright positions in the first stage of labour reduces the duration ...

Some examples from the web:

• We have assassins on stand-by, Mr. Lutulu, ready to strike at the first stage of the assault.
• at the first stage of the application process: a financial plan;
• You know that at the first stage, we are proposing a regime for the euro area Member States and, at the second stage, for all 27 Member States.
• However, we need to consider today that we are at the first stage of this directive, and I can see that Commissioner Dalli, who has helped us a great deal in this respect, agrees with me.
• Two basic conditions are necessary for the industrialisation of poor countries: the possibility to protect their markets in industrialised goods from very big players at least at the first stage of their development - just as industrialised countries did - and the access to technology.
• In two stage submissions the number of proposals passing to the second stage will be determined on the basis of the number of proposals that pass the thresholds for the criteria established at the first stage.
• at the first stage, those parts of the information folder and the EC type- approval certificates required for a complete vehicle which are relevant to the state of completion of the base vehicle;
• at the first stage, those parts of the information folder and the EC type-approval certificates required for a complete vehicle which are relevant to the state of completion of the base vehicle;
• At the first stage of the placing on the market of an authorised primary
• 2. At the first stage the butter shall be put up for sale by tender. The Annexes to the Regulations relating to the sale of the butter shall replace the notice of invitation to tender.
• At the first stage of the placing on the market of a product consisting of or containing GMOs, including bulk quantities, operators shall ensure that the following information is transmitted in writing to the operator receiving the product:
• 1. At the first stage of the placing on the market of a product consisting of or containing GMOs, including bulk quantities, operators shall ensure that the following information is transmitted in writing to the operator receiving the product:
• At the first stage of the placing on the market of a product consisting of or containing GMOs, including bulk quantities, operators shall ensure that the following information is transmitted to the operator receiving the product:
• That is why great importance has been attached by my country's government's policy to ensuring that Portugal will enter EMU at the first stage.
• The possibility of a reservation of this type is contrary to the principle that there should be no review at the first stage of a proceedings, which is fundamental in the system of the Convention, but it has been cautiously allowed.
• Will the European Chemicals Agency ECHA manage to check the registration of the 25000 substances involved at the first stage quickly enough to allow those businesses which join in later (join submission) unquestionably to do their part by 1 December 2010?
• At the first stage, Member States and/or undertakings which have voluntarily renounced none or less than 13.5% of their quotas for 2008/2009 should have those quotas cut by 13.5%.
• 'Brian and I had finally arrived at the first stage.
• It might have facilitated the process if they had been involved at the first stage.
• Of course, European political parties already exist, but they are at the first stage of their development and they are rather like umbrella associations.