Clinical evaluation of injectable lorazepam as a premedicant: the effect on recall

A double-blind comparison of lorazepam and placebo, lorazepam and pentobarbital, and a comparison of lorazepam IV drip versus lorazepam IV bolus as a premedicant showed this new agent to offer promise as a sedative premedicant. However, the potency of the drug demands caution, and its use for outpatient premedication is not recommended.

Fowl cholera; cross-protective turkey antisera and IgG antibodies induced with Pasteurella multocida-infected tissue bacterins

Turkey antisera induced with formolized Pasteurella multocida-infected tissues (T antisera) passively cross-immunized 48 of 55 chickens against a challenge dose of P. multocida organisms, from which 0 of 15 controls survived. However, turkey antisera induced with formalin-killed, agar-cultured P. multocida cells (A antisera) passively cross-immunized only 4 of 30 chickens. Cross-immunity refers to protection against a different immunologic type of P. multocida. Quantitative precipitin reactions of the A and T antisera with antigens from agar-cultured cells showed that more antibody was present in the A than in the T antisera. However, antigens extracted from the infected tissues reacted with the T and not with the A antisera in the Ouchterlony procedure, demonstrating qualitative differences between the agar-cultured antigens and those extracted from the infected tissue. The gel precipitins isolated from the A and T antisera were characterized as 7S immunoglobulins, which behaved in immunoelectrophoresis as would be expected for a IgG immunoglobulin. The IgG fraction from the T antiserum passively cross-immunized chickens almost as well as the whole antiserum; hence, the IgG antibody is a major factor in cross-immunity.

Value of biochemical profiling in a periodic health examination program: analysis of 1,000 cases

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Cell volume determinations of Dictyostelium discoideum

The intercellular water present in pellets of centrifuged cell suspensions of the slime mold Dictyostelium discoideum was measured at four stages of differentiation.

Inhibition by actinomycin D of uridine diphosphoglucose synthetase activity during differentiation of Dictyostelium discoideum

Actinomycin D inhibits the increase in specific activity of uridine diphosphoglucose synthetase during differentiation of the cellular slime mold, Dictyostelium discoideum. The degree to which this inhibition occurs is strictly correlated with, and may result from, the general inhibition of morphogenesis by actinomycin D.