Study Media Salt content Protein content Other components Reference Hemmes et al. 1960 1 part allantoic fluid and one part2% Difco peptone ∼2.3 g L−1 (0.4 g L−1 K+, 0.9 g L−1 Na+,0.9 g L−1 Cl−)a 10 g L−1 peptone -b [8], [43] Harper 1961 Allantoic fluid diluted 1∶8 or 1∶10 incasein McIlvaine’s buffer (pH 7.2) ∼2.2 g L−1 (mainly Na2HPO4) a ∼1.9 g L−1 mainly casein -b [13], [43], [44] Shechmeister 1950 Allantoic fluid in 0.1 M Sorensen’sphosphate buffer (pH 7.1) 19.6 g L−1 (8.09 g L−1 NaH2PO4, 9.51 gL−1 Na2HPO4) ∼1 g L−1 in allantoicfluid -b [15], [43] Schaffer et al. 1976 MEM 9.88 g L−1 (6.8 g L−1 NaCl, 2.2 g L−1NaHCO3, and others) 0 Amino acids, vitamins,glucose, others [14], [43], [45] MEM+0.1% BSA 9.88 g L−1 1 g L−1 Same as above Allantoic fluid ∼4.7 g L−1 (0.8 g L−1 K+, 1.8 g L−1 Na+,1.8 g L−1 Cl−)a ∼1 g L−1 This work PBS (pH 7.2) 9.55 g L−1 (8 g L−1 NaCl, 0.2 g L−1 KCl,1.15 g L−1 Na2HPO4, 0.2 g L−1 KH2PO4) 0 None PBS+5% fetal calf serum (FCS) Same as above ∼3.5 g L−1 Other componentsfrom FCS Dulbecco's modified Eaglemedium (DMEM) 10.92 g L−1 (6.4 g L−1 NaCl, 3.7 g L−1NaHCO3) 0.42 g L−1 Amino acids, vitamins,glucose, others DMEM+5%FCS Same as above ∼3.9 g L−1 Same as above