Cross-reactivity and antigenic structure of the C 5 component of human complement
W e tr ied to f ind some corre la t ion be tween t he syn thes i s of p roazu lenes in t he essent ia l oil of s o m e species oi the genus Achilles and t he n u m b e r of c h r o m o s o m e s in thei r somat ic cells: 12 species were i nves t i ga t ed ; in each case, samples of wild and cu l t iva t ed p l an t s of local and foreign origin were inc luded (table). P roazu lenes were ident i f ied in a wa te r ex t r ac t ob ta ined f rom t he herbage, us ing t he m e t h o d of S tah l based on color reac t ion of azulenes wi th p d i m e t h y l a m i n o benza ldehyde [6]. The n u m b e r of ch romosomes in mi to t ic ceils in vege t a t i on or roots af ter ge rmi na t i on was de t e rmined b y t he m e t h o d ol E h r e n d o r f e r [7]. The e x p e r i m e n t s showed t h a t the genus Achilles is polyploid wi th the base n u m b e r x = 9 of ch romosomes . P roazu lenes were p r e sen t in all s amples of the species Achilles coZlina Becke t and Achilles pannonica Scheele; t he former is t e t r a ploid (2ar 36), t he la t t e r hexa or octoploid ( 2 n = 54 or 2n = 72; table). O the r species (except Achilles miile]oIium L.
Cross-reactions between human and animal plasma proteins
SummaryThe rôle of several structural and functional factors and of concentration on the cross-reactions of 28 human plasma proteins with their homologues in animal blood was investigated. The Immunological Evolution Group (IEG) system was employed for this purpose as described earlier (Bauer, 1970 a). No interaction of structural factors was detected, while an influence of serum level of the different proteins could not be ruled out with certainty.At least in the case of the 4 immunoglobulins and the 3 complement factors, included in the IEG-system, protein function and evolution show some degree of correlation, indicating the influence of function on molecular evolution in the case of these plasma proteins.
The effect of continuous exposure to low frequency electric fields on three generations of mice: A pilot study
Mice were allowed to mate, gestate, deliver and rear their offspring for 3 successive generations while being continuously exposed to 60 Hz electric fields. Mice exposed to vertical electric fields exhibited decreased body weights at 35 days postpartum and increased mortality, rates for 3 successive generations. Mice exposed to horizontal electric fields exhibited decreased body weights for 2 successive generations.