The effects of nitrogen(N) and phosphorus(P) limitation(N: 500μg.L-1,P: 74～0.74μg.L-1 and P: 74μg.L-1,N: 500～5μg.L-1) on the growth and cyst formation of Scrippsiella trochoidea(Stein) Loeblch III were studied by a series of indoor experiments.
(Cyst) abundance was very high with a maximum concentration of 1.12×10~5/g, and the average concentrations in the upper 12cm layers of sediments in S1 to S3 were 4.13,2.02 and 1.14×10~4/g respectively.
The study showed that 0.5%～2.5% matrine seed coating agent provide better control to soybean root miner,grub and soybean cyst nematide compare to the 30% carbofuran carbendazim thiram WS,the effect was(73.1%)～95%,71.4%～100% and 94.9%～98.6% respectively.
Rat Pneumocystis carinii cyst soluble antigen (CSA) was analysed by SDS-PAGE,and more than 20 polypeptide bands were found. The molecular weights of the major bands were >100kDa,85-94kDa,67kDa,52kDa and 34kDa,respectively.
The mean cyst numbers per field of lung print smear of two tested groups (0.96±0.36, 0.69±0.19) were lower than that of the immunosuppressed rats control (1.73±0.56, P <0.05), however, that of home made group was higher than imported group ( P <0.05).
Thyroglossal duct carcinoma, which is usually diagnosed postoperatively, is a rare malignant tumor arising in the thyroglossal duct cyst.
Two cases were diagnosed as thyroglossal duct cyst prior to the operation, the remaining one as dermoid cyst.
Primary thyroglossal duct carcinoma should conform to the following criteria: localization of the carcinoma to a clearly demonstrable thyroglossal duct cyst or tract; clinically or histologically confirmed absence of carcinoma of the thyroid gland.
The obligatory heterogenous tissue cyst-forming coccidia of the genus Sarcystosis are regarded as an excellent example of the specific coexistence of two organisms, i.e., the host and parasite.
Of special interest is the parasite's ability to persist in this host at the stage of tissue cyst or sarcocyst.