Final answer:
Herceptin is a monoclonal antibody with anticancer properties, particularly for treating HER2 positive breast cancer. A modified antimicrobial compound that is effective against both gram-negative and gram-positive bacteria is considered semisynthetic. The antifungal properties being researched are related to the plant Dalbergia sissoo and not linked to Herceptin.
Step-by-step explanation:
The researcher developed a new drug, Herceptin, that has shown anti-cancer properties. Herceptin is a monoclonal antibody that interferes with the HER2/neu receptor. Its main use is to treat certain breast cancer types that are HER2 positive. Most antivirals are relatively safe to the host, and can be used to treat infections such as HIV, herpes viruses, influenza, and Hepatitis B and C, which can cause liver cancer. However, no antiviral properties are mentioned for Herceptin in the context provided.
The newly discovered antimicrobial compound produced by a soil bacterium is a semisynthetic drug. This is because the original natural compound has been chemically modified to enhance its antimicrobial properties, making it effective against both gram-negative and gram-positive bacteria.
Lastly, antifungal properties are part of the research conducted on relatives of the plant Dalbergia sissoo. But the context given does not indicate that Herceptin has antifungal activities.