Simultaneous isolation of protein C activator, fibrin clot promoting enzyme (fibrozyme) and phospholipase A2 from the venom of the southern copperhead snake.

The simultaneous isolation of three enzymes from the southern copperhead snake venom (Agkistrodon contortrix contortrix; ACC) is described. The first step is a chromatography of crude venom on a Mono S cation-exchange column at pH 6.5.

A new simple method for determination of erythrocyte filtrability.

A new simple filtration technique designed for measuring red cell filtrability in the routine laboratory use was developed. The suspension of the whole blood in saline (1:20,000 dilution) was processed on the Sartorius filter membranes, pore size 8 micron. The percentage of passed erythrocytes indicating red cell filtrability was determined.

A comparison of the behaviour of human adult and foetal haemoglobins on oxidation.

The measurements of oxidation-reduction potentials at pH 7.0 and ionic strength of 0.1 revealed only a slight difference between human adult (HbA) and foetal haemoglobin (HbF) (161 and 145 mV), which disappeared on increasing the ionic strength to 2.