PFT President Calls on School District to Negotiate in an Environment ofMutual RespectPHILADELPHIA, June 22 /PRNewswire-USNewswire/ -- Philadelphia Federation ofTeachers President Jerry T. IDS BOOSTED BY "REMARKABLE" VITAMIN D MARKET Immunodiagnostic Systems (IDH.L) reported a 27 percentincrease to 4.8 million pounds in pre-tax profits for thefull-year to March 31, boosted by the growing concern overvitamin D deficiency. Revenues jumped 51 percent to 24.9 millionpounds while earnings per share increased 21 percent to 16.166pence. The diagnostic kits maker increased its dividend by 10percent and launched a new automatic diagnostic device. Chiefexecutive Roger Duggan described the vitamin D market as"remarkable" and said: "The demand for vitamin D testing in theU.S rose by 80 percent to 90 percent last year. In France, themarket tripled over the past seven quarters." THAMES POISED FOR ACTION IF OFWAT PLAN DISAPPOINTS Thames Water THWEF.PK is poised to appeal to theCompetition Committee to seek better terms from Ofwat if the UKwater regulator's review of water bills comes in too low.

Theprivatised water company says it may not be in position tofinance its 5.5 billion capital spending if Ofwat estimates itscost of capital at less than 5.25 percent. Most analysts expectthe regulator's figure, due in July, to be around 4.85 percent,in line with lower estimates from Britain's other privatisedwater companies. Chief financial officer Mark Braithwaite said:"Ofwat has a duty to ensure we can finance our functions. Wehave to be confident that our allowance lets us finance our corefunctions and capital programme.

Ultimately we have the right togo to the Competition Commission." FRESNILLO ABANDONS HOSTILE BID FOR CANADA'S MAG SILVER London-listed Fresnillo (FRES.L) announced on Monday it hadabandoned its 109 million pounds hostile takeover bid for MAGSilver (MAG.TO). The Mexican company, which is the world'sbiggest primary silver producer, said its decision came after itnoted excessive delays in an independent valuation of theCanadian group. Shares in Fresnillo, which owns 20 percent ofMAG, closed down 41.50 pence at 525 pence. The company'sdecision to drop the bid is seen as an impediment for itsstrategy of consolidating mining in Mexico by acquiring smallergroups APPLE AND INTEL BUY IMAGINATION STAKES U.S. technology giants Intel (INTC.O) and Apple (AAPL.O)have bought stakes in Imagination Technologies (IMG.L), aHertfordshire-based semiconductor designer worth 240 millionpounds, in a bid to safeguard the future of their products. Lastweek, Intel's venture capital arm bought 25 million shares worth20 million pounds to take its holding to just under 14 percent.The purchase marked the second stake-raising in seven months,with the first taking place in December just one day after Appleacquired a 3.6 percent stake. Intel said it had no intention oflaunching a bid but reserved the right if a rival offer emerged.