Referring to Al Fenecker's letter of 12-21-65, horo de a summey of our experience with CC18.

1. Using CCAS as a reforence for CCAG:

Summary: CCA6, using CCA8 as tho reference at the ball, hied vallus of 700 CCA units gave us values of 0.65 nd 0.78 of the 900 unit labelled value for CCA6.

Summary: CCAS, using Co.ó at the lat

as the reference, yielded valuoc of (l; and 0.69 m. U12 700 unit labelled value for CCAB.

Lodorlo Laboratorios

Comparativo CCA Dotorminations of Influenza Nil Standards #6 and 48 (Uncorrected Valuos).