Replication of polydeoxyadenylate and polydeoxythymidylate catalyzed by the high molecular weight DNA polymerase proceeds only in the presence of a complementary oligodeoxynucleotide. The oligodeoxynucleotide initiator chain must be greater than 6 nucleotides for poly(dA) replication and greater than 5 nucleotides for poly(dT) replication. The initiator oligonucleotide is incorporated into prod...

Thymus vulgaris has gained tremendous popularity as an ornamental, culinary herb and its use in phytotherapy is well established and supported in the literature. The objective of this study was to explore possible interactions between selected molecules within Thymus vulgaris essential oil (TvEO) to gain a better understanding of how this complex essential oil exerts its antimicrobial activity....

The in vitro secondary cytotoxic T lymphocyte (CTL) response to Sendai virus-treated stimulator cells by primed spleen cells from thymus gland-grafted nude mice was examined. BALB/c (H-2d) nude mice grafted with allogeneic C57BL/10 (H-2b) thymus glands developed CTL responses directed exclusively to Sendai virus-infected H-2d target cells. (C57BL/6 X BALB/c)F1 nude mice grafted with thymus glan...

SMALL lobules of aberrant thymus are not infrequently found in the neck, often within the thyroid gland, possibly present in up to 20% of humans (Goldstein and Mackay, 1969; Gilmour, 1941). However, ectopic thymic tissue of size sufficient to produce a palpable swelling of the neck is uncommon. In a review of the forty-six such cases recorded in the English literature, Hinds et al. (1970) found...

level of water, neutral fat, total cholesterol, free cholesterol, and phospholipid, expressed as gm/100 gm dry weight, in the carcass (host rat minus tumor) of albino rats bearing Walker car cinoma @56shifts toward the level of these dc ments in the tumor (5). These changes, which have been categorized collectively as the hydrolipo tropic shift, appear in the host carcass after @†" 4 weeks of...

From the facts stated in this paper it is evident that the thymus gland of mammals contains a substance which is capable of producing tetany when fed to the larvae of certain species of salamanders (Ambystoma opacum and Ambystoma maculatum). As long as the larvae have not developed their own thymus glands, they are able, by means of some mechanism, to counterbalance the tetanic action of the th...